<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:185d3109-83e6-47ea-b5d7-b7ace216c0b4,g:35c2c071-5427-48fd-9776-cb850794fbac-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED" xlink:type="simple" xlink:href="mur-20250630.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_2d57d63d-5fce-4ec2-a07b-617468506f2c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_StatementTable_2d57d63d-5fce-4ec2-a07b-617468506f2c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_e985f708-8c2f-46a5-923f-afb6fa5b2d0c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_2d57d63d-5fce-4ec2-a07b-617468506f2c" xlink:to="loc_srt_ProductOrServiceAxis_e985f708-8c2f-46a5-923f-afb6fa5b2d0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e985f708-8c2f-46a5-923f-afb6fa5b2d0c_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_e985f708-8c2f-46a5-923f-afb6fa5b2d0c" xlink:to="loc_srt_ProductsAndServicesDomain_e985f708-8c2f-46a5-923f-afb6fa5b2d0c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8ea72bd7-e9fb-4276-9f5e-fa60d32caa58" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_e985f708-8c2f-46a5-923f-afb6fa5b2d0c" xlink:to="loc_srt_ProductsAndServicesDomain_8ea72bd7-e9fb-4276-9f5e-fa60d32caa58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasExplorationAndProductionMember_63287569-81a1-4338-aab9-c56740496375" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasExplorationAndProductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_8ea72bd7-e9fb-4276-9f5e-fa60d32caa58" xlink:to="loc_us-gaap_OilAndGasExplorationAndProductionMember_63287569-81a1-4338-aab9-c56740496375" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPurchasedMember_aa7b7eab-6e1e-4ff7-9041-eea0601456f5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_8ea72bd7-e9fb-4276-9f5e-fa60d32caa58" xlink:to="loc_us-gaap_OilAndGasPurchasedMember_aa7b7eab-6e1e-4ff7-9041-eea0601456f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_93c08b3c-ff01-481d-b12b-e1f3075cee36" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenuesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_RevenuesAbstract_93c08b3c-ff01-481d-b12b-e1f3075cee36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_09a2fda2-4e3e-4864-8a52-3c8896156076" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_93c08b3c-ff01-481d-b12b-e1f3075cee36" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_09a2fda2-4e3e-4864-8a52-3c8896156076" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_e453833c-2ece-47e4-9044-8220f41e5ff5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDerivativeInstrumentsNetPretax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_93c08b3c-ff01-481d-b12b-e1f3075cee36" xlink:to="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_e453833c-2ece-47e4-9044-8220f41e5ff5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_GainLossOnSaleOfAssetsAndOtherIncome_d5beeee2-fff7-4fce-a609-9ff2c62ece35" xlink:href="mur-20250630.xsd#mur_GainLossOnSaleOfAssetsAndOtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_93c08b3c-ff01-481d-b12b-e1f3075cee36" xlink:to="loc_mur_GainLossOnSaleOfAssetsAndOtherIncome_d5beeee2-fff7-4fce-a609-9ff2c62ece35" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_371b52f1-2e92-4e7c-bde2-ef179f959658" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_93c08b3c-ff01-481d-b12b-e1f3075cee36" xlink:to="loc_us-gaap_Revenues_371b52f1-2e92-4e7c-bde2-ef179f959658" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_bda722c7-38b7-43c9-bd27-ee363db8f219" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_OperatingLeaseExpense_bda722c7-38b7-43c9-bd27-ee363db8f219" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductionTaxExpense_d6e0bf59-0649-44fd-be08-1e3ab76196aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductionTaxExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_ProductionTaxExpense_d6e0bf59-0649-44fd-be08-1e3ab76196aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TransportationGatheringandProcessingCosts_7b292ee3-4fc5-46db-b3b6-ba897343b325" xlink:href="mur-20250630.xsd#mur_TransportationGatheringandProcessingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_mur_TransportationGatheringandProcessingCosts_7b292ee3-4fc5-46db-b3b6-ba897343b325" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_cac69728-3be7-4281-a0a2-bfbb695d3864" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_cac69728-3be7-4281-a0a2-bfbb695d3864" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExplorationExpense_742dc381-4331-4dab-9cb4-0e5d0ced18d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ExplorationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_ExplorationExpense_742dc381-4331-4dab-9cb4-0e5d0ced18d4" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_25cd205e-252d-46b6-9826-1b4090950256" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_25cd205e-252d-46b6-9826-1b4090950256" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_5f8ad1de-4120-42c0-9518-9c883fa38f53" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_5f8ad1de-4120-42c0-9518-9c883fa38f53" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_2eff5f34-9854-476d-bdf9-c661d8bd4b8f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationAccretionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_AssetRetirementObligationAccretionExpense_2eff5f34-9854-476d-bdf9-c661d8bd4b8f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfOilAndGasProperties_365cb1d3-e9c1-49fd-bb42-288f64e7e7ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfOilAndGasProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_ImpairmentOfOilAndGasProperties_365cb1d3-e9c1-49fd-bb42-288f64e7e7ed" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_cbd812a1-db03-42ac-ae35-0d29998ea3f9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_cbd812a1-db03-42ac-ae35-0d29998ea3f9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_dc2b1489-4615-4753-aa56-3dac925e04a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostsAndExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_313435df-674b-43e3-91bd-1c9f18f5707c" xlink:to="loc_us-gaap_CostsAndExpenses_dc2b1489-4615-4753-aa56-3dac925e04a2" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_446d9c8a-180b-41cc-a732-e504fcc6081e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_OperatingIncomeLoss_446d9c8a-180b-41cc-a732-e504fcc6081e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8cf287b9-5b93-4d55-997a-257ce631d7c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8cf287b9-5b93-4d55-997a-257ce631d7c1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_8d6dbdc9-2fc7-4187-9e48-786b9357f4ae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8cf287b9-5b93-4d55-997a-257ce631d7c1" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_8d6dbdc9-2fc7-4187-9e48-786b9357f4ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_0d927110-a5f1-41d8-b584-e75caa13367f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8cf287b9-5b93-4d55-997a-257ce631d7c1" xlink:to="loc_us-gaap_InterestExpenseNonoperating_0d927110-a5f1-41d8-b584-e75caa13367f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_3abbc4e5-46f2-4905-b147-2e37494ebe95" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8cf287b9-5b93-4d55-997a-257ce631d7c1" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_3abbc4e5-46f2-4905-b147-2e37494ebe95" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1f90f202-cf47-4cd9-a065-16db5425232d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1f90f202-cf47-4cd9-a065-16db5425232d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_d5a99cd9-5777-4878-9072-c1330eb6c9d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_d5a99cd9-5777-4878-9072-c1330eb6c9d6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperations_21ca2bc8-631f-4153-a766-970585243c09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperations_21ca2bc8-631f-4153-a766-970585243c09" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_f1c49be1-4997-49d1-8639-8edb64d7f3c5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_f1c49be1-4997-49d1-8639-8edb64d7f3c5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_be66f99e-6f28-4621-befc-fa66ef49dd61" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_ProfitLoss_be66f99e-6f28-4621-befc-fa66ef49dd61" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_5c76aad8-29d1-4f58-aef3-b0db7bd16102" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_5c76aad8-29d1-4f58-aef3-b0db7bd16102" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_24f0a275-30e6-4711-ba7e-5e6632d6371b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_NetIncomeLoss_24f0a275-30e6-4711-ba7e-5e6632d6371b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicAbstract_80867901-2f87-4d49-a132-3623ea212ab1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_EarningsPerShareBasicAbstract_80867901-2f87-4d49-a132-3623ea212ab1" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_532e25d4-e1c0-463f-a8bd-001191179aa4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_80867901-2f87-4d49-a132-3623ea212ab1" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_532e25d4-e1c0-463f-a8bd-001191179aa4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_bedf66be-c8a9-4551-aea5-3ac813633b6e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_80867901-2f87-4d49-a132-3623ea212ab1" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_bedf66be-c8a9-4551-aea5-3ac813633b6e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_cfd21293-86c4-4d02-8b9a-a7c0daa98858" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicAbstract_80867901-2f87-4d49-a132-3623ea212ab1" xlink:to="loc_us-gaap_EarningsPerShareBasic_cfd21293-86c4-4d02-8b9a-a7c0daa98858" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedAbstract_6c9841a9-43fe-4c4e-b693-75487f5c0c70" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDilutedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_EarningsPerShareDilutedAbstract_6c9841a9-43fe-4c4e-b693-75487f5c0c70" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_57d6ff4d-99b2-477f-bf38-d5587190221b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_6c9841a9-43fe-4c4e-b693-75487f5c0c70" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_57d6ff4d-99b2-477f-bf38-d5587190221b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_3c78ee5d-ffe6-4976-862a-361ea11156c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_6c9841a9-43fe-4c4e-b693-75487f5c0c70" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_3c78ee5d-ffe6-4976-862a-361ea11156c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_540f2d19-b329-4c78-bb6a-f27513b98611" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareDilutedAbstract_6c9841a9-43fe-4c4e-b693-75487f5c0c70" xlink:to="loc_us-gaap_EarningsPerShareDiluted_540f2d19-b329-4c78-bb6a-f27513b98611" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_c1a0f5cd-2232-4fb8-bfa6-49eb7a3c4fa6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockDividendsPerShareCashPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_us-gaap_CommonStockDividendsPerShareCashPaid_c1a0f5cd-2232-4fb8-bfa6-49eb7a3c4fa6" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_AverageCommonSharesOutstandingAbstract_53a77992-4d61-49d5-b7ef-3dce4fd5242b" xlink:href="mur-20250630.xsd#mur_AverageCommonSharesOutstandingAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_de9d9a54-6c22-46b1-a82e-cfeee9505cbe" xlink:to="loc_mur_AverageCommonSharesOutstandingAbstract_53a77992-4d61-49d5-b7ef-3dce4fd5242b" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_567bb80b-3a61-451e-aec3-6279215d7e20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mur_AverageCommonSharesOutstandingAbstract_53a77992-4d61-49d5-b7ef-3dce4fd5242b" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_567bb80b-3a61-451e-aec3-6279215d7e20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_5fe2cd67-ce56-4c9c-af5a-1b17b901d323" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mur_AverageCommonSharesOutstandingAbstract_53a77992-4d61-49d5-b7ef-3dce4fd5242b" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_5fe2cd67-ce56-4c9c-af5a-1b17b901d323" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYUNAUDITED" xlink:type="simple" xlink:href="mur-20250630.xsd#CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYUNAUDITED"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYUNAUDITED" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_646b864c-82e2-464e-b617-ac13dadc3114" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_85a57227-a01e-4da0-951f-8e5b71de7f3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_646b864c-82e2-464e-b617-ac13dadc3114" xlink:to="loc_us-gaap_StatementTable_85a57227-a01e-4da0-951f-8e5b71de7f3b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_390d2a23-d157-4d5c-9b2b-d498e43dc2d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_85a57227-a01e-4da0-951f-8e5b71de7f3b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_390d2a23-d157-4d5c-9b2b-d498e43dc2d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_390d2a23-d157-4d5c-9b2b-d498e43dc2d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_390d2a23-d157-4d5c-9b2b-d498e43dc2d1" xlink:to="loc_us-gaap_EquityComponentDomain_390d2a23-d157-4d5c-9b2b-d498e43dc2d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_14741ca5-aa7b-4799-b1e5-0d92f7545efd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_390d2a23-d157-4d5c-9b2b-d498e43dc2d1" xlink:to="loc_us-gaap_EquityComponentDomain_14741ca5-aa7b-4799-b1e5-0d92f7545efd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_2c6e6367-2e54-4b90-85c2-8f721d56b7ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_14741ca5-aa7b-4799-b1e5-0d92f7545efd" xlink:to="loc_us-gaap_ParentMember_2c6e6367-2e54-4b90-85c2-8f721d56b7ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_285139c2-b620-4aa5-b490-f3db4de98924" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_2c6e6367-2e54-4b90-85c2-8f721d56b7ca" xlink:to="loc_us-gaap_CommonStockMember_285139c2-b620-4aa5-b490-f3db4de98924" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_e4d5adbc-b709-4179-8ab4-330ec65e1311" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_2c6e6367-2e54-4b90-85c2-8f721d56b7ca" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_e4d5adbc-b709-4179-8ab4-330ec65e1311" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_314ef44e-662a-4ba2-901a-73256f983dd7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_2c6e6367-2e54-4b90-85c2-8f721d56b7ca" xlink:to="loc_us-gaap_RetainedEarningsMember_314ef44e-662a-4ba2-901a-73256f983dd7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_8974d2c3-91ff-4b51-a9d5-f672a5a5b820" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_2c6e6367-2e54-4b90-85c2-8f721d56b7ca" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_8974d2c3-91ff-4b51-a9d5-f672a5a5b820" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_b6c4381b-0fc6-457e-bd80-af9f8aff0210" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_2c6e6367-2e54-4b90-85c2-8f721d56b7ca" xlink:to="loc_us-gaap_TreasuryStockCommonMember_b6c4381b-0fc6-457e-bd80-af9f8aff0210" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_6a7083ee-9579-4be3-96b6-6b1887565bfc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_14741ca5-aa7b-4799-b1e5-0d92f7545efd" xlink:to="loc_us-gaap_NoncontrollingInterestMember_6a7083ee-9579-4be3-96b6-6b1887565bfc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_646b864c-82e2-464e-b617-ac13dadc3114" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_bd917c1b-237c-404a-8f6b-2c67f4a3fd14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_bd917c1b-237c-404a-8f6b-2c67f4a3fd14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_a36269d6-7f8d-42cd-8888-884dd9ebf33c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_a36269d6-7f8d-42cd-8888-884dd9ebf33c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_72fd3971-e805-4c3d-959b-92604e03673d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_72fd3971-e805-4c3d-959b-92604e03673d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_aafecc76-098e-4259-ac72-66937b3ecd5d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_NetIncomeLoss_aafecc76-098e-4259-ac72-66937b3ecd5d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCash_23da54f9-b5a5-4fc2-86fd-ff87ce3ae8a3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DividendsCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_DividendsCash_23da54f9-b5a5-4fc2-86fd-ff87ce3ae8a3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_e46b49ca-e8b5-4f8d-8d43-1b974d4576ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_e46b49ca-e8b5-4f8d-8d43-1b974d4576ed" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax_edea24f7-7914-4ee1-afc3-34a3a2c54af4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax_edea24f7-7914-4ee1-afc3-34a3a2c54af4" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_59872c78-0d92-47a4-a83c-00178d9b6709" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_59872c78-0d92-47a4-a83c-00178d9b6709" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_aa39ddda-ff08-44f0-9c8c-1569bd3ac3c1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_aa39ddda-ff08-44f0-9c8c-1569bd3ac3c1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_8cf8971c-4ec4-4c50-ac9f-94e356d9fade" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_c7936caf-a45a-4a83-a0ae-843e1feebf01" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_8cf8971c-4ec4-4c50-ac9f-94e356d9fade" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_3d875874-9d55-4912-bf82-977ef7585c42" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/RevenuefromContractswithCustomersDisaggregationofRevenueDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#RevenuefromContractswithCustomersDisaggregationofRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/RevenuefromContractswithCustomersDisaggregationofRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_481e9d86-c7e0-49bc-96c0-e84dec95e557" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_fbad216e-e245-44a4-bb24-6f6d9154675c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_481e9d86-c7e0-49bc-96c0-e84dec95e557" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_fbad216e-e245-44a4-bb24-6f6d9154675c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_d36b7812-e00e-4808-abde-20f88ce2541f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_fbad216e-e245-44a4-bb24-6f6d9154675c" xlink:to="loc_srt_StatementGeographicalAxis_d36b7812-e00e-4808-abde-20f88ce2541f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_d36b7812-e00e-4808-abde-20f88ce2541f_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_d36b7812-e00e-4808-abde-20f88ce2541f" xlink:to="loc_srt_SegmentGeographicalDomain_d36b7812-e00e-4808-abde-20f88ce2541f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ffd01833-5357-4e3d-a353-33592342d80a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_d36b7812-e00e-4808-abde-20f88ce2541f" xlink:to="loc_srt_SegmentGeographicalDomain_ffd01833-5357-4e3d-a353-33592342d80a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_UnitedStatesOnshoreMember_5ba1405e-6f34-4bad-ad1c-a711b7d9acf6" xlink:href="mur-20250630.xsd#mur_UnitedStatesOnshoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ffd01833-5357-4e3d-a353-33592342d80a" xlink:to="loc_mur_UnitedStatesOnshoreMember_5ba1405e-6f34-4bad-ad1c-a711b7d9acf6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_UnitedStatesOffshoreMember_23a61a9e-c586-41d3-b21e-5209ddca4097" xlink:href="mur-20250630.xsd#mur_UnitedStatesOffshoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ffd01833-5357-4e3d-a353-33592342d80a" xlink:to="loc_mur_UnitedStatesOffshoreMember_23a61a9e-c586-41d3-b21e-5209ddca4097" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_CanadaOnshoreMember_8f2bad64-aa91-4b2a-8a5d-3a2b2a7592c0" xlink:href="mur-20250630.xsd#mur_CanadaOnshoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ffd01833-5357-4e3d-a353-33592342d80a" xlink:to="loc_mur_CanadaOnshoreMember_8f2bad64-aa91-4b2a-8a5d-3a2b2a7592c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_CanadaOffshoreMember_2af1890c-1397-4fae-b442-4f58d35141e2" xlink:href="mur-20250630.xsd#mur_CanadaOffshoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ffd01833-5357-4e3d-a353-33592342d80a" xlink:to="loc_mur_CanadaOffshoreMember_2af1890c-1397-4fae-b442-4f58d35141e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_LocationsOtherThanUsCaAndMyMember_35bc872e-e199-4b9a-be2f-f7f58b820709" xlink:href="mur-20250630.xsd#mur_LocationsOtherThanUsCaAndMyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ffd01833-5357-4e3d-a353-33592342d80a" xlink:to="loc_mur_LocationsOtherThanUsCaAndMyMember_35bc872e-e199-4b9a-be2f-f7f58b820709" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_0d44ad77-07c9-4d78-95a1-dc76f7e49c83" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_fbad216e-e245-44a4-bb24-6f6d9154675c" xlink:to="loc_srt_ProductOrServiceAxis_0d44ad77-07c9-4d78-95a1-dc76f7e49c83" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_0d44ad77-07c9-4d78-95a1-dc76f7e49c83_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_0d44ad77-07c9-4d78-95a1-dc76f7e49c83" xlink:to="loc_srt_ProductsAndServicesDomain_0d44ad77-07c9-4d78-95a1-dc76f7e49c83_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_df9f0214-33fe-4f66-9a87-d797b1fea6ae" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_0d44ad77-07c9-4d78-95a1-dc76f7e49c83" xlink:to="loc_srt_ProductsAndServicesDomain_df9f0214-33fe-4f66-9a87-d797b1fea6ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasExplorationAndProductionMember_748c12d6-64c5-47c7-be07-80d1f1610d32" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasExplorationAndProductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_df9f0214-33fe-4f66-9a87-d797b1fea6ae" xlink:to="loc_us-gaap_OilAndGasExplorationAndProductionMember_748c12d6-64c5-47c7-be07-80d1f1610d32" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OilReservesMember_c6ae5555-847c-463c-92c8-3e2185bb862f" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_OilReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OilAndGasExplorationAndProductionMember_748c12d6-64c5-47c7-be07-80d1f1610d32" xlink:to="loc_srt_OilReservesMember_c6ae5555-847c-463c-92c8-3e2185bb862f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NaturalGasLiquidsReservesMember_b70a061b-8f4a-4894-a84c-63c22808f8df" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NaturalGasLiquidsReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OilAndGasExplorationAndProductionMember_748c12d6-64c5-47c7-be07-80d1f1610d32" xlink:to="loc_srt_NaturalGasLiquidsReservesMember_b70a061b-8f4a-4894-a84c-63c22808f8df" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NaturalGasReservesMember_c2c41896-e7a3-4e0c-b443-90fda7bdc87c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NaturalGasReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OilAndGasExplorationAndProductionMember_748c12d6-64c5-47c7-be07-80d1f1610d32" xlink:to="loc_srt_NaturalGasReservesMember_c2c41896-e7a3-4e0c-b443-90fda7bdc87c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPurchasedMember_176560bf-0959-457d-8431-60d01b621c92" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_df9f0214-33fe-4f66-9a87-d797b1fea6ae" xlink:to="loc_us-gaap_OilAndGasPurchasedMember_176560bf-0959-457d-8431-60d01b621c92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7cc85f64-4ad2-4de2-8f0f-2d122597fad1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_481e9d86-c7e0-49bc-96c0-e84dec95e557" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7cc85f64-4ad2-4de2-8f0f-2d122597fad1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_b09d2cd1-c3a8-4b97-b2cf-717102f25c0c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDerivativeInstrumentsNetPretax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_481e9d86-c7e0-49bc-96c0-e84dec95e557" xlink:to="loc_us-gaap_GainLossOnDerivativeInstrumentsNetPretax_b09d2cd1-c3a8-4b97-b2cf-717102f25c0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_GainLossOnSaleOfAssetsAndOtherIncome_72a27873-b024-4cd0-81e6-df923e879035" xlink:href="mur-20250630.xsd#mur_GainLossOnSaleOfAssetsAndOtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_481e9d86-c7e0-49bc-96c0-e84dec95e557" xlink:to="loc_mur_GainLossOnSaleOfAssetsAndOtherIncome_72a27873-b024-4cd0-81e6-df923e879035" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_5806784b-507e-48c2-9bcd-def0522f2ff9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_481e9d86-c7e0-49bc-96c0-e84dec95e557" xlink:to="loc_us-gaap_Revenues_5806784b-507e-48c2-9bcd-def0522f2ff9" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/RevenuefromContractswithCustomersCurrentLongTermContractsOutstandingDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#RevenuefromContractswithCustomersCurrentLongTermContractsOutstandingDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/RevenuefromContractswithCustomersCurrentLongTermContractsOutstandingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_1c781096-d749-4b15-b0ef-b9a5e60e1161" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_ebe67020-819b-4cd8-bac5-e3313ef00916" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_1c781096-d749-4b15-b0ef-b9a5e60e1161" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_ebe67020-819b-4cd8-bac5-e3313ef00916" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationAxis_c90fa0fe-ee9b-43fa-beaa-376319cc606b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerDurationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ebe67020-819b-4cd8-bac5-e3313ef00916" xlink:to="loc_us-gaap_ContractWithCustomerDurationAxis_c90fa0fe-ee9b-43fa-beaa-376319cc606b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationDomain_c90fa0fe-ee9b-43fa-beaa-376319cc606b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerDurationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ContractWithCustomerDurationAxis_c90fa0fe-ee9b-43fa-beaa-376319cc606b" xlink:to="loc_us-gaap_ContractWithCustomerDurationDomain_c90fa0fe-ee9b-43fa-beaa-376319cc606b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerDurationDomain_0f269158-93e5-4bb3-b6a9-0a51ac2fe304" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerDurationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ContractWithCustomerDurationAxis_c90fa0fe-ee9b-43fa-beaa-376319cc606b" xlink:to="loc_us-gaap_ContractWithCustomerDurationDomain_0f269158-93e5-4bb3-b6a9-0a51ac2fe304" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_EndDateQuarter42025Member_64a4dac9-3ded-44b0-89d5-65b7ab959f23" xlink:href="mur-20250630.xsd#mur_EndDateQuarter42025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerDurationDomain_0f269158-93e5-4bb3-b6a9-0a51ac2fe304" xlink:to="loc_mur_EndDateQuarter42025Member_64a4dac9-3ded-44b0-89d5-65b7ab959f23" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_EndDateQuarter42026Member_b64b12d2-da1d-4ee3-be26-67aa553d2a49" xlink:href="mur-20250630.xsd#mur_EndDateQuarter42026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerDurationDomain_0f269158-93e5-4bb3-b6a9-0a51ac2fe304" xlink:to="loc_mur_EndDateQuarter42026Member_b64b12d2-da1d-4ee3-be26-67aa553d2a49" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_EndDateQuarter42027Member_83053afe-634a-4b25-ac97-fb1e4edc71b8" xlink:href="mur-20250630.xsd#mur_EndDateQuarter42027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerDurationDomain_0f269158-93e5-4bb3-b6a9-0a51ac2fe304" xlink:to="loc_mur_EndDateQuarter42027Member_83053afe-634a-4b25-ac97-fb1e4edc71b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_EndDateQuarter42028Member_2d80c9d6-09a2-40e5-a24d-ad65f697ed5c" xlink:href="mur-20250630.xsd#mur_EndDateQuarter42028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerDurationDomain_0f269158-93e5-4bb3-b6a9-0a51ac2fe304" xlink:to="loc_mur_EndDateQuarter42028Member_2d80c9d6-09a2-40e5-a24d-ad65f697ed5c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_8baba651-6288-460a-b8af-112e40ef56c1" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ebe67020-819b-4cd8-bac5-e3313ef00916" xlink:to="loc_srt_StatementGeographicalAxis_8baba651-6288-460a-b8af-112e40ef56c1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_8baba651-6288-460a-b8af-112e40ef56c1_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_8baba651-6288-460a-b8af-112e40ef56c1" xlink:to="loc_srt_SegmentGeographicalDomain_8baba651-6288-460a-b8af-112e40ef56c1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_26d912a2-96ba-49f9-986b-dfcf0c3e6984" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_8baba651-6288-460a-b8af-112e40ef56c1" xlink:to="loc_srt_SegmentGeographicalDomain_26d912a2-96ba-49f9-986b-dfcf0c3e6984" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_720a22ee-8542-4b8c-998c-1485bfec25db" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_26d912a2-96ba-49f9-986b-dfcf0c3e6984" xlink:to="loc_country_CA_720a22ee-8542-4b8c-998c-1485bfec25db" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_ad328fe2-d0a2-47d7-8852-78d807bb76c8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerBasisOfPricingAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_ebe67020-819b-4cd8-bac5-e3313ef00916" xlink:to="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_ad328fe2-d0a2-47d7-8852-78d807bb76c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_ad328fe2-d0a2-47d7-8852-78d807bb76c8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerBasisOfPricingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_ad328fe2-d0a2-47d7-8852-78d807bb76c8" xlink:to="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_ad328fe2-d0a2-47d7-8852-78d807bb76c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_be40d92b-e0a3-4482-9db1-6dd1323073b7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerBasisOfPricingDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_ad328fe2-d0a2-47d7-8852-78d807bb76c8" xlink:to="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_be40d92b-e0a3-4482-9db1-6dd1323073b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_UsdIndexPricingMember_2d9f4499-9ad2-4569-8434-55921597a0ac" xlink:href="mur-20250630.xsd#mur_UsdIndexPricingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_be40d92b-e0a3-4482-9db1-6dd1323073b7" xlink:to="loc_mur_UsdIndexPricingMember_2d9f4499-9ad2-4569-8434-55921597a0ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_CADFixedPriceMember_72dbe980-33ff-4726-955c-403d498a88b3" xlink:href="mur-20250630.xsd#mur_CADFixedPriceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingDomain_be40d92b-e0a3-4482-9db1-6dd1323073b7" xlink:to="loc_mur_CADFixedPriceMember_72dbe980-33ff-4726-955c-403d498a88b3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_RevenueRemainingPerformanceObligationQuantityPerDay_fb192274-3735-4c74-adbc-6b4a9efdf527" xlink:href="mur-20250630.xsd#mur_RevenueRemainingPerformanceObligationQuantityPerDay"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_1c781096-d749-4b15-b0ef-b9a5e60e1161" xlink:to="loc_mur_RevenueRemainingPerformanceObligationQuantityPerDay_fb192274-3735-4c74-adbc-6b4a9efdf527" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/PropertyPlantandEquipmentNarrativeDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#PropertyPlantandEquipmentNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/PropertyPlantandEquipmentNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_cb6cf812-28e6-45eb-b0ed-e321ca5cc424" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_cb6cf812-28e6-45eb-b0ed-e321ca5cc424" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_15c6ac0a-d054-4b08-896b-30cb1101cb30" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_cb6cf812-28e6-45eb-b0ed-e321ca5cc424" xlink:to="loc_srt_StatementGeographicalAxis_15c6ac0a-d054-4b08-896b-30cb1101cb30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_15c6ac0a-d054-4b08-896b-30cb1101cb30_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_15c6ac0a-d054-4b08-896b-30cb1101cb30" xlink:to="loc_srt_SegmentGeographicalDomain_15c6ac0a-d054-4b08-896b-30cb1101cb30_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_8e276a0e-3f5a-42b3-a2d8-0f09de977f29" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_15c6ac0a-d054-4b08-896b-30cb1101cb30" xlink:to="loc_srt_SegmentGeographicalDomain_8e276a0e-3f5a-42b3-a2d8-0f09de977f29" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_VN_9e7697c5-246a-4c12-a3b0-c5d0248ab7de" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_VN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_8e276a0e-3f5a-42b3-a2d8-0f09de977f29" xlink:to="loc_country_VN_9e7697c5-246a-4c12-a3b0-c5d0248ab7de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_GulfOfAmericaMember_12e694a2-bbc1-40af-8bbb-325bf3149ba5" xlink:href="mur-20250630.xsd#mur_GulfOfAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_8e276a0e-3f5a-42b3-a2d8-0f09de977f29" xlink:to="loc_mur_GulfOfAmericaMember_12e694a2-bbc1-40af-8bbb-325bf3149ba5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_4f6a9946-936a-47c0-b9f9-b396dd6654aa" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_8e276a0e-3f5a-42b3-a2d8-0f09de977f29" xlink:to="loc_country_CA_4f6a9946-936a-47c0-b9f9-b396dd6654aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_BN_17b66d25-761f-491e-9dfb-1e327ebdbeac" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_BN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_8e276a0e-3f5a-42b3-a2d8-0f09de977f29" xlink:to="loc_country_BN_17b66d25-761f-491e-9dfb-1e327ebdbeac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_EagleFordShaleMember_d019f7e9-4a55-4e47-bf30-27c07e9f8dd7" xlink:href="mur-20250630.xsd#mur_EagleFordShaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_8e276a0e-3f5a-42b3-a2d8-0f09de977f29" xlink:to="loc_mur_EagleFordShaleMember_d019f7e9-4a55-4e47-bf30-27c07e9f8dd7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionAxis_b902694e-02b1-4240-8e0b-e3ffe985dd99" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_cb6cf812-28e6-45eb-b0ed-e321ca5cc424" xlink:to="loc_us-gaap_AssetAcquisitionAxis_b902694e-02b1-4240-8e0b-e3ffe985dd99" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_b902694e-02b1-4240-8e0b-e3ffe985dd99_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AssetAcquisitionAxis_b902694e-02b1-4240-8e0b-e3ffe985dd99" xlink:to="loc_us-gaap_AssetAcquisitionDomain_b902694e-02b1-4240-8e0b-e3ffe985dd99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_c389db98-365c-4d34-ab0e-142d21552497" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AssetAcquisitionAxis_b902694e-02b1-4240-8e0b-e3ffe985dd99" xlink:to="loc_us-gaap_AssetAcquisitionDomain_c389db98-365c-4d34-ab0e-142d21552497" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_BWPioneerFloatingProductionStorageAndOffloadingVesselFPSOMember_5b6cd716-5114-4675-9e52-9a0aa04e45f6" xlink:href="mur-20250630.xsd#mur_BWPioneerFloatingProductionStorageAndOffloadingVesselFPSOMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_c389db98-365c-4d34-ab0e-142d21552497" xlink:to="loc_mur_BWPioneerFloatingProductionStorageAndOffloadingVesselFPSOMember_5b6cd716-5114-4675-9e52-9a0aa04e45f6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_8f0f99ba-11f2-4d2a-9afb-8ec3e1bd50d6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_cb6cf812-28e6-45eb-b0ed-e321ca5cc424" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_8f0f99ba-11f2-4d2a-9afb-8ec3e1bd50d6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_8f0f99ba-11f2-4d2a-9afb-8ec3e1bd50d6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_8f0f99ba-11f2-4d2a-9afb-8ec3e1bd50d6" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_8f0f99ba-11f2-4d2a-9afb-8ec3e1bd50d6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_58171d98-90dc-414e-a2e5-920bcf369d94" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_8f0f99ba-11f2-4d2a-9afb-8ec3e1bd50d6" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_58171d98-90dc-414e-a2e5-920bcf369d94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_daeab777-5ee3-43c8-a6fe-ec781ac5fdd6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_58171d98-90dc-414e-a2e5-920bcf369d94" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_daeab777-5ee3-43c8-a6fe-ec781ac5fdd6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_5e50524d-7595-4e91-a2ac-cfca7237e340" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_cb6cf812-28e6-45eb-b0ed-e321ca5cc424" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_5e50524d-7595-4e91-a2ac-cfca7237e340" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_5e50524d-7595-4e91-a2ac-cfca7237e340_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_5e50524d-7595-4e91-a2ac-cfca7237e340" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_5e50524d-7595-4e91-a2ac-cfca7237e340_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_fc39390d-1e9e-4935-a8d5-20e7d6ff233d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_5e50524d-7595-4e91-a2ac-cfca7237e340" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_fc39390d-1e9e-4935-a8d5-20e7d6ff233d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_cacd7356-954b-4394-ae84-1fc5213fea1a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_fc39390d-1e9e-4935-a8d5-20e7d6ff233d" xlink:to="loc_us-gaap_SubsequentEventMember_cacd7356-954b-4394-ae84-1fc5213fea1a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedExploratoryWellCosts_4188a19c-24ef-4f5c-93e0-ead7b341aa0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalizedExploratoryWellCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_CapitalizedExploratoryWellCosts_4188a19c-24ef-4f5c-93e0-ead7b341aa0a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves_9a33717a-fd47-4efc-87c9-bffd0ea151e7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves_9a33717a-fd47-4efc-87c9-bffd0ea151e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_NetOilPayFeetPerReservoir_bc894f12-d3c8-48c2-871f-45b6371c570d" xlink:href="mur-20250630.xsd#mur_NetOilPayFeetPerReservoir"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_mur_NetOilPayFeetPerReservoir_bc894f12-d3c8-48c2-871f-45b6371c570d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedExploratoryWellCostChargedToExpense1_67f87943-6c3c-43ea-bbdb-3eaef8c2b423" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalizedExploratoryWellCostChargedToExpense1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_CapitalizedExploratoryWellCostChargedToExpense1_67f87943-6c3c-43ea-bbdb-3eaef8c2b423" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_WellCostsIncurredAndExpensed_1c613771-d261-47f3-b1b4-58022441709f" xlink:href="mur-20250630.xsd#mur_WellCostsIncurredAndExpensed"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_mur_WellCostsIncurredAndExpensed_1c613771-d261-47f3-b1b4-58022441709f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_29378c9e-6838-4a7c-a613-e9a4324aa722" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_CapitalizedExploratoryWellCostsThatHaveBeenCapitalizedForPeriodGreaterThanOneYear_29378c9e-6838-4a7c-a613-e9a4324aa722" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionConsiderationTransferred_dca76851-1286-4a93-8169-0ba79cf12634" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetAcquisitionConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_AssetAcquisitionConsiderationTransferred_dca76851-1286-4a93-8169-0ba79cf12634" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_58a1e553-eb52-4332-a081-510b4a60800e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_58a1e553-eb52-4332-a081-510b4a60800e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_OperationsAndMaintenanceServicesTermOfContract_eaee2039-3614-4907-a29c-2b99017168b8" xlink:href="mur-20250630.xsd#mur_OperationsAndMaintenanceServicesTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_mur_OperationsAndMaintenanceServicesTermOfContract_eaee2039-3614-4907-a29c-2b99017168b8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfOilAndGasProperties_31fc6e4c-b39c-4c5c-bfa7-ba5c076f2809" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfOilAndGasProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_us-gaap_ImpairmentOfOilAndGasProperties_31fc6e4c-b39c-4c5c-bfa7-ba5c076f2809" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_PaymentsToAcquireAdditionalWorkingInterests_58a787c1-2e02-4912-bd13-ed5fd7f7755d" xlink:href="mur-20250630.xsd#mur_PaymentsToAcquireAdditionalWorkingInterests"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_a2356101-c5d0-4669-ad88-495732691ca7" xlink:to="loc_mur_PaymentsToAcquireAdditionalWorkingInterests_58a787c1-2e02-4912-bd13-ed5fd7f7755d" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/PropertyPlantandEquipmentAgingofCapitalizedExploratoryWellCostsDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#PropertyPlantandEquipmentAgingofCapitalizedExploratoryWellCostsDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/PropertyPlantandEquipmentAgingofCapitalizedExploratoryWellCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_0a95ef33-999b-48cc-8819-2426bcd69724" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_071eccf5-c235-4538-a91e-1bd4eb41b8a9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_0a95ef33-999b-48cc-8819-2426bcd69724" xlink:to="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_071eccf5-c235-4538-a91e-1bd4eb41b8a9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_1cacad4c-4d98-48a0-a9e2-4b42843f0b40" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearTable_071eccf5-c235-4538-a91e-1bd4eb41b8a9" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_1cacad4c-4d98-48a0-a9e2-4b42843f0b40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_1cacad4c-4d98-48a0-a9e2-4b42843f0b40_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_1cacad4c-4d98-48a0-a9e2-4b42843f0b40" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_1cacad4c-4d98-48a0-a9e2-4b42843f0b40_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_b93cc820-6b93-45e9-8d9a-e5fd32c7f74a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsAxis_1cacad4c-4d98-48a0-a9e2-4b42843f0b40" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_b93cc820-6b93-45e9-8d9a-e5fd32c7f74a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodOneMember_6d71686a-e096-4732-99d6-669be787a13a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_b93cc820-6b93-45e9-8d9a-e5fd32c7f74a" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodOneMember_6d71686a-e096-4732-99d6-669be787a13a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodTwoMember_e3e2b204-33eb-4659-a0fa-5eee2a9a4043" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_b93cc820-6b93-45e9-8d9a-e5fd32c7f74a" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodTwoMember_e3e2b204-33eb-4659-a0fa-5eee2a9a4043" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodThreeMember_a8a4e10d-4dd6-44bf-ae2c-77262aec0dbd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_b93cc820-6b93-45e9-8d9a-e5fd32c7f74a" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodThreeMember_a8a4e10d-4dd6-44bf-ae2c-77262aec0dbd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFourMember_24e1169c-06b6-4aaf-9f4d-961c31665a7d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodRangeDomain_b93cc820-6b93-45e9-8d9a-e5fd32c7f74a" xlink:to="loc_us-gaap_AgingOfCapitalizedExploratoryWellCostsPeriodFourMember_24e1169c-06b6-4aaf-9f4d-961c31665a7d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedExploratoryWellCosts_abcfe5e5-dc1d-4a1e-8b3d-a19d8b211715" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CapitalizedExploratoryWellCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_0a95ef33-999b-48cc-8819-2426bcd69724" xlink:to="loc_us-gaap_CapitalizedExploratoryWellCosts_abcfe5e5-dc1d-4a1e-8b3d-a19d8b211715" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ExploratoryWellsDrilledNetProductive_e9bb7521-676d-4553-8921-fbf63f666b84" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ExploratoryWellsDrilledNetProductive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectsWithExploratoryWellCostsCapitalizedForMoreThanOneYearLineItems_0a95ef33-999b-48cc-8819-2426bcd69724" xlink:to="loc_srt_ExploratoryWellsDrilledNetProductive_e9bb7521-676d-4553-8921-fbf63f666b84" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancingArrangementsandDebtDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancingArrangementsandDebtDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancingArrangementsandDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_0e1aa387-bfc2-4d5e-aae0-208e54e7ca12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_8aa5dbf1-52ba-41db-9d87-81d107046663" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0e1aa387-bfc2-4d5e-aae0-208e54e7ca12" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_8aa5dbf1-52ba-41db-9d87-81d107046663" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_5a7ac2c2-1f25-4878-bd3a-62579113b94c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_8aa5dbf1-52ba-41db-9d87-81d107046663" xlink:to="loc_us-gaap_CreditFacilityAxis_5a7ac2c2-1f25-4878-bd3a-62579113b94c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_5a7ac2c2-1f25-4878-bd3a-62579113b94c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_5a7ac2c2-1f25-4878-bd3a-62579113b94c" xlink:to="loc_us-gaap_CreditFacilityDomain_5a7ac2c2-1f25-4878-bd3a-62579113b94c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_b18bbf72-e13a-48a0-8d22-944f6f8a972c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_5a7ac2c2-1f25-4878-bd3a-62579113b94c" xlink:to="loc_us-gaap_CreditFacilityDomain_b18bbf72-e13a-48a0-8d22-944f6f8a972c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_80c1754e-055f-4428-b2c0-e3d71758c9e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_b18bbf72-e13a-48a0-8d22-944f6f8a972c" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_80c1754e-055f-4428-b2c0-e3d71758c9e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8d82a814-2576-465e-ae12-91f75ea938ab" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_8aa5dbf1-52ba-41db-9d87-81d107046663" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_8d82a814-2576-465e-ae12-91f75ea938ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8d82a814-2576-465e-ae12-91f75ea938ab_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8d82a814-2576-465e-ae12-91f75ea938ab" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8d82a814-2576-465e-ae12-91f75ea938ab_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6cd3d970-bee0-4586-9ddd-d35c39bcd32a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8d82a814-2576-465e-ae12-91f75ea938ab" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6cd3d970-bee0-4586-9ddd-d35c39bcd32a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_e0f3b792-2151-44ca-b210-4371420d01a2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UnsecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6cd3d970-bee0-4586-9ddd-d35c39bcd32a" xlink:to="loc_us-gaap_UnsecuredDebtMember_e0f3b792-2151-44ca-b210-4371420d01a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_1ab057a8-45f3-4a26-8e1f-0f86df2ee462" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_6cd3d970-bee0-4586-9ddd-d35c39bcd32a" xlink:to="loc_us-gaap_LetterOfCreditMember_1ab057a8-45f3-4a26-8e1f-0f86df2ee462" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_c79052e6-0225-4bc6-ad41-7c54980f3618" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0e1aa387-bfc2-4d5e-aae0-208e54e7ca12" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_c79052e6-0225-4bc6-ad41-7c54980f3618" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_fa12058b-e68c-4a7b-864b-559f858b5744" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0e1aa387-bfc2-4d5e-aae0-208e54e7ca12" xlink:to="loc_us-gaap_LineOfCredit_fa12058b-e68c-4a7b-864b-559f858b5744" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_e304fcbd-b779-4977-bfe3-2ff17965171d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LineOfCreditFacilityInterestRateDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0e1aa387-bfc2-4d5e-aae0-208e54e7ca12" xlink:to="loc_us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_e304fcbd-b779-4977-bfe3-2ff17965171d" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/EmployeeandRetireeBenefitPlansComponentsofNetPeriodicBenefitExpenseDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#EmployeeandRetireeBenefitPlansComponentsofNetPeriodicBenefitExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/EmployeeandRetireeBenefitPlansComponentsofNetPeriodicBenefitExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_b32739ae-11c4-4b59-9bd9-b4a630297d99" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_b32739ae-11c4-4b59-9bd9-b4a630297d99" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_0b578c80-84f2-464e-b5de-119766c61ae1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_b32739ae-11c4-4b59-9bd9-b4a630297d99" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_0b578c80-84f2-464e-b5de-119766c61ae1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_0b578c80-84f2-464e-b5de-119766c61ae1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_0b578c80-84f2-464e-b5de-119766c61ae1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_0b578c80-84f2-464e-b5de-119766c61ae1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_47420e65-2ae6-4e8a-9468-439f572df010" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_0b578c80-84f2-464e-b5de-119766c61ae1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_47420e65-2ae6-4e8a-9468-439f572df010" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_654dd7a4-ec1a-464d-b201-1e9a621cab85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_47420e65-2ae6-4e8a-9468-439f572df010" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_654dd7a4-ec1a-464d-b201-1e9a621cab85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_109f92c1-6aa0-4591-9977-91f3d39c3a39" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_47420e65-2ae6-4e8a-9468-439f572df010" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_109f92c1-6aa0-4591-9977-91f3d39c3a39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_9fbce800-faec-4a10-8784-0fd511f82cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_9fbce800-faec-4a10-8784-0fd511f82cd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_ee5656ca-979c-4704-9c15-098de49c551e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_ee5656ca-979c-4704-9c15-098de49c551e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_cefe717a-7d7e-4709-98ce-ae971b2e4147" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_cefe717a-7d7e-4709-98ce-ae971b2e4147" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAmendments_434121b8-16b2-4b34-bbb6-aacdca312b02" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanPlanAmendments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAmendments_434121b8-16b2-4b34-bbb6-aacdca312b02" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_cc2793fc-3ee3-4046-b3c2-510e46c24f28" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_cc2793fc-3ee3-4046-b3c2-510e46c24f28" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_2e6825d3-d3e8-423b-b32f-9589d2e48bff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_2e6825d3-d3e8-423b-b32f-9589d2e48bff" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_e706438a-d058-4cd0-ae82-ffb61a9fdbfc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_49c0e6da-33e9-4186-aae9-42c1a1472dcb" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_e706438a-d058-4cd0-ae82-ffb61a9fdbfc" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/IncentivePlansSummaryofAwardsGrantedDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#IncentivePlansSummaryofAwardsGrantedDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/IncentivePlansSummaryofAwardsGrantedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5c1a89e7-d998-4802-8065-4c5fd937a5fd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9e9f5743-22fe-4f86-8e1f-a085a266e9df" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5c1a89e7-d998-4802-8065-4c5fd937a5fd" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9e9f5743-22fe-4f86-8e1f-a085a266e9df" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_c1f35435-c633-4948-bd3e-afaf57c6f9d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9e9f5743-22fe-4f86-8e1f-a085a266e9df" xlink:to="loc_us-gaap_AwardTypeAxis_c1f35435-c633-4948-bd3e-afaf57c6f9d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c1f35435-c633-4948-bd3e-afaf57c6f9d9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_c1f35435-c633-4948-bd3e-afaf57c6f9d9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c1f35435-c633-4948-bd3e-afaf57c6f9d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57dd06cc-c322-4ac3-992b-fb06ea9e2108" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_c1f35435-c633-4948-bd3e-afaf57c6f9d9" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57dd06cc-c322-4ac3-992b-fb06ea9e2108" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember_6655442c-b0a6-49de-9f14-67bd4169ccb6" xlink:href="mur-20250630.xsd#mur_TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57dd06cc-c322-4ac3-992b-fb06ea9e2108" xlink:to="loc_mur_TotalShareholderReturnPerformanceBasedRestrictedStockUnitsMember_6655442c-b0a6-49de-9f14-67bd4169ccb6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_ReturnOnAverageCapitalEmployedPerformanceBasedRestrictedStockUnitsMember_7cde59c2-eada-4074-8d0d-1c738296c01c" xlink:href="mur-20250630.xsd#mur_ReturnOnAverageCapitalEmployedPerformanceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57dd06cc-c322-4ac3-992b-fb06ea9e2108" xlink:to="loc_mur_ReturnOnAverageCapitalEmployedPerformanceBasedRestrictedStockUnitsMember_7cde59c2-eada-4074-8d0d-1c738296c01c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TimeBasedRestrictedStockUnitsMember_49d2343b-2f78-46c3-90b2-3d4e5fb7961e" xlink:href="mur-20250630.xsd#mur_TimeBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57dd06cc-c322-4ac3-992b-fb06ea9e2108" xlink:to="loc_mur_TimeBasedRestrictedStockUnitsMember_49d2343b-2f78-46c3-90b2-3d4e5fb7961e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_CashSettledRestrictedStockUnitsMember_8979e2ee-ef96-4978-aa49-672b9012de39" xlink:href="mur-20250630.xsd#mur_CashSettledRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57dd06cc-c322-4ac3-992b-fb06ea9e2108" xlink:to="loc_mur_CashSettledRestrictedStockUnitsMember_8979e2ee-ef96-4978-aa49-672b9012de39" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_50d3a6ca-9c31-410e-a8d4-47e88511762b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_57dd06cc-c322-4ac3-992b-fb06ea9e2108" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_50d3a6ca-9c31-410e-a8d4-47e88511762b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_231db144-f2ad-4315-a95d-0f376968ca27" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9e9f5743-22fe-4f86-8e1f-a085a266e9df" xlink:to="loc_us-gaap_PlanNameAxis_231db144-f2ad-4315-a95d-0f376968ca27" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_231db144-f2ad-4315-a95d-0f376968ca27_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_231db144-f2ad-4315-a95d-0f376968ca27" xlink:to="loc_us-gaap_PlanNameDomain_231db144-f2ad-4315-a95d-0f376968ca27_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_4f470108-e779-487d-b29d-d6c8052ce5f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_231db144-f2ad-4315-a95d-0f376968ca27" xlink:to="loc_us-gaap_PlanNameDomain_4f470108-e779-487d-b29d-d6c8052ce5f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_LongTermIncentivePlanTwentyTwentyFiveMember_df82af49-2eb6-4307-ab85-8e35abf075d7" xlink:href="mur-20250630.xsd#mur_LongTermIncentivePlanTwentyTwentyFiveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4f470108-e779-487d-b29d-d6c8052ce5f3" xlink:to="loc_mur_LongTermIncentivePlanTwentyTwentyFiveMember_df82af49-2eb6-4307-ab85-8e35abf075d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_LongTermIncentivePlanTwentyTwentyMember_87ee6b3f-f0ce-4ff5-9b5c-5dc902755bfa" xlink:href="mur-20250630.xsd#mur_LongTermIncentivePlanTwentyTwentyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4f470108-e779-487d-b29d-d6c8052ce5f3" xlink:to="loc_mur_LongTermIncentivePlanTwentyTwentyMember_87ee6b3f-f0ce-4ff5-9b5c-5dc902755bfa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_A2021NonEmployeeDirectorPlanMember_4d614c36-4a0b-496e-8d36-0c3e472894fc" xlink:href="mur-20250630.xsd#mur_A2021NonEmployeeDirectorPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4f470108-e779-487d-b29d-d6c8052ce5f3" xlink:to="loc_mur_A2021NonEmployeeDirectorPlanMember_4d614c36-4a0b-496e-8d36-0c3e472894fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateAxis_5d64c267-6111-4859-bc75-29f11b8ed7bd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9e9f5743-22fe-4f86-8e1f-a085a266e9df" xlink:to="loc_us-gaap_AwardDateAxis_5d64c267-6111-4859-bc75-29f11b8ed7bd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_5d64c267-6111-4859-bc75-29f11b8ed7bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardDateAxis_5d64c267-6111-4859-bc75-29f11b8ed7bd" xlink:to="loc_us-gaap_AwardDateDomain_5d64c267-6111-4859-bc75-29f11b8ed7bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_1ce84203-2894-401e-818e-1b6cfc48716d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AwardDateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardDateAxis_5d64c267-6111-4859-bc75-29f11b8ed7bd" xlink:to="loc_us-gaap_AwardDateDomain_1ce84203-2894-401e-818e-1b6cfc48716d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_February42025Member_66d6594c-93ba-4a83-8caf-ff3a999b1e47" xlink:href="mur-20250630.xsd#mur_February42025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_1ce84203-2894-401e-818e-1b6cfc48716d" xlink:to="loc_mur_February42025Member_66d6594c-93ba-4a83-8caf-ff3a999b1e47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_February52025Member_84ec2647-ba13-4294-a08a-0e2504bb4007" xlink:href="mur-20250630.xsd#mur_February52025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_1ce84203-2894-401e-818e-1b6cfc48716d" xlink:to="loc_mur_February52025Member_84ec2647-ba13-4294-a08a-0e2504bb4007" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_March312025Member_efa64408-164a-44c7-8436-572010b603eb" xlink:href="mur-20250630.xsd#mur_March312025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_1ce84203-2894-401e-818e-1b6cfc48716d" xlink:to="loc_mur_March312025Member_efa64408-164a-44c7-8436-572010b603eb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_June302025Member_c5fc5043-b414-45ef-897d-81c07d9ee016" xlink:href="mur-20250630.xsd#mur_June302025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_1ce84203-2894-401e-818e-1b6cfc48716d" xlink:to="loc_mur_June302025Member_c5fc5043-b414-45ef-897d-81c07d9ee016" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_8ab0e868-7831-4c50-8919-c725bf281b25" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5c1a89e7-d998-4802-8065-4c5fd937a5fd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_8ab0e868-7831-4c50-8919-c725bf281b25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_04899178-a3e7-4833-ba75-30f801bdf77b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5c1a89e7-d998-4802-8065-4c5fd937a5fd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_04899178-a3e7-4833-ba75-30f801bdf77b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_f50edf81-a807-472b-823a-6630c1d04c3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5c1a89e7-d998-4802-8065-4c5fd937a5fd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_f50edf81-a807-472b-823a-6630c1d04c3a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_8e993e2b-f30d-48a0-8cef-ad597f661056" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5c1a89e7-d998-4802-8065-4c5fd937a5fd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_8e993e2b-f30d-48a0-8cef-ad597f661056" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TaxCutsAndJobsActOf2017ThresholdOfDeductibleCompensationForExecutiveOfficers_ac2b366f-9925-4204-9770-a4971c7a1f3f" xlink:href="mur-20250630.xsd#mur_TaxCutsAndJobsActOf2017ThresholdOfDeductibleCompensationForExecutiveOfficers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_5c1a89e7-d998-4802-8065-4c5fd937a5fd" xlink:to="loc_mur_TaxCutsAndJobsActOf2017ThresholdOfDeductibleCompensationForExecutiveOfficers_ac2b366f-9925-4204-9770-a4971c7a1f3f" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementNarrativeDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancialInstrumentsandRiskManagementNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_e9caa968-dc3f-4291-ad28-17c16b40d754" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_1845d1ad-e0e6-4e73-9ce8-dc324bccc97a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_e9caa968-dc3f-4291-ad28-17c16b40d754" xlink:to="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_1845d1ad-e0e6-4e73-9ce8-dc324bccc97a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_fcefffaa-be5c-4fba-b40c-86866e6c27a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_1845d1ad-e0e6-4e73-9ce8-dc324bccc97a" xlink:to="loc_us-gaap_FinancialInstrumentAxis_fcefffaa-be5c-4fba-b40c-86866e6c27a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fcefffaa-be5c-4fba-b40c-86866e6c27a7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_fcefffaa-be5c-4fba-b40c-86866e6c27a7" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fcefffaa-be5c-4fba-b40c-86866e6c27a7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_17ae2607-a20b-42af-a175-e74ff3c44e3f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_fcefffaa-be5c-4fba-b40c-86866e6c27a7" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_17ae2607-a20b-42af-a175-e74ff3c44e3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_CommoditySwapsMember_4a2d6f34-f48d-4ec1-90cb-f84d3e5e5c8f" xlink:href="mur-20250630.xsd#mur_CommoditySwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_17ae2607-a20b-42af-a175-e74ff3c44e3f" xlink:to="loc_mur_CommoditySwapsMember_4a2d6f34-f48d-4ec1-90cb-f84d3e5e5c8f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_62321c2d-6523-4174-9dcf-4108427a7ee8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_1845d1ad-e0e6-4e73-9ce8-dc324bccc97a" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_62321c2d-6523-4174-9dcf-4108427a7ee8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_62321c2d-6523-4174-9dcf-4108427a7ee8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_62321c2d-6523-4174-9dcf-4108427a7ee8" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_62321c2d-6523-4174-9dcf-4108427a7ee8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_c3aa0003-9577-4958-9192-1e51cdb9897a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_62321c2d-6523-4174-9dcf-4108427a7ee8" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_c3aa0003-9577-4958-9192-1e51cdb9897a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_b8140ad6-325f-467d-8858-1826109c43c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_c3aa0003-9577-4958-9192-1e51cdb9897a" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_b8140ad6-325f-467d-8858-1826109c43c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfForeignCurrencyDerivativesHeld_045ecb0c-681f-4c76-9389-74d94928ccba" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NumberOfForeignCurrencyDerivativesHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_e9caa968-dc3f-4291-ad28-17c16b40d754" xlink:to="loc_us-gaap_NumberOfForeignCurrencyDerivativesHeld_045ecb0c-681f-4c76-9389-74d94928ccba" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_62be08bb-fd87-4660-846d-f2f377bfcdc3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_e9caa968-dc3f-4291-ad28-17c16b40d754" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_62be08bb-fd87-4660-846d-f2f377bfcdc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_87542c05-7093-48d5-a708-f69feaed5687" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_e9caa968-dc3f-4291-ad28-17c16b40d754" xlink:to="loc_us-gaap_DerivativeLiabilities_87542c05-7093-48d5-a708-f69feaed5687" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_NumberOfOffsettingPositions_8cd56641-fc7a-409b-8d6c-479a68525bfb" xlink:href="mur-20250630.xsd#mur_NumberOfOffsettingPositions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_e9caa968-dc3f-4291-ad28-17c16b40d754" xlink:to="loc_mur_NumberOfOffsettingPositions_8cd56641-fc7a-409b-8d6c-479a68525bfb" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementCrudeOilDerivativeContractsDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancialInstrumentsandRiskManagementCrudeOilDerivativeContractsDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementCrudeOilDerivativeContractsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_1a57996a-5d82-4947-84ba-5eac34da38b0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_04f95aa3-36a9-4f1a-88a0-ea6b3d20f541" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_1a57996a-5d82-4947-84ba-5eac34da38b0" xlink:to="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_04f95aa3-36a9-4f1a-88a0-ea6b3d20f541" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_3c1eae9c-7e94-4dda-abbd-ae986b5ff561" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_04f95aa3-36a9-4f1a-88a0-ea6b3d20f541" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_3c1eae9c-7e94-4dda-abbd-ae986b5ff561" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_3c1eae9c-7e94-4dda-abbd-ae986b5ff561_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3c1eae9c-7e94-4dda-abbd-ae986b5ff561" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_3c1eae9c-7e94-4dda-abbd-ae986b5ff561_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_86c69c1c-30f8-4548-96b5-18828e490ac2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_3c1eae9c-7e94-4dda-abbd-ae986b5ff561" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_86c69c1c-30f8-4548-96b5-18828e490ac2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_def3f3ee-41c2-423a-86b0-0544a2b4b7b8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_86c69c1c-30f8-4548-96b5-18828e490ac2" xlink:to="loc_us-gaap_CommodityContractMember_def3f3ee-41c2-423a-86b0-0544a2b4b7b8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TriggeringEventAxis_b4e12e83-5e84-48bf-b988-738ef71d5636" xlink:href="mur-20250630.xsd#mur_TriggeringEventAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_04f95aa3-36a9-4f1a-88a0-ea6b3d20f541" xlink:to="loc_mur_TriggeringEventAxis_b4e12e83-5e84-48bf-b988-738ef71d5636" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TriggeringEventDomain_b4e12e83-5e84-48bf-b988-738ef71d5636_default" xlink:href="mur-20250630.xsd#mur_TriggeringEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_mur_TriggeringEventAxis_b4e12e83-5e84-48bf-b988-738ef71d5636" xlink:to="loc_mur_TriggeringEventDomain_b4e12e83-5e84-48bf-b988-738ef71d5636_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TriggeringEventDomain_ce30699b-a6be-4a48-a642-660b8caeb805" xlink:href="mur-20250630.xsd#mur_TriggeringEventDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_mur_TriggeringEventAxis_b4e12e83-5e84-48bf-b988-738ef71d5636" xlink:to="loc_mur_TriggeringEventDomain_ce30699b-a6be-4a48-a642-660b8caeb805" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_July12025Member_01ad1004-4a18-40a7-b9c2-ba11c80bd366" xlink:href="mur-20250630.xsd#mur_July12025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mur_TriggeringEventDomain_ce30699b-a6be-4a48-a642-660b8caeb805" xlink:to="loc_mur_July12025Member_01ad1004-4a18-40a7-b9c2-ba11c80bd366" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_October12025Member_4d896f32-6838-46c5-9faf-ec42ebe1eba1" xlink:href="mur-20250630.xsd#mur_October12025Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_mur_TriggeringEventDomain_ce30699b-a6be-4a48-a642-660b8caeb805" xlink:to="loc_mur_October12025Member_4d896f32-6838-46c5-9faf-ec42ebe1eba1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction_5b4bd930-5381-452d-8bdb-11caf4cb8af3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_1a57996a-5d82-4947-84ba-5eac34da38b0" xlink:to="loc_us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction_5b4bd930-5381-452d-8bdb-11caf4cb8af3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeSwapTypeAverageFixedPrice_83060f42-a2e9-429f-aa66-d453c8983e3a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeSwapTypeAverageFixedPrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_1a57996a-5d82-4947-84ba-5eac34da38b0" xlink:to="loc_us-gaap_DerivativeSwapTypeAverageFixedPrice_83060f42-a2e9-429f-aa66-d453c8983e3a" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementFairValueofDerivativeInstrumentsNotDesignatedasHedgingInstrumentsDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancialInstrumentsandRiskManagementFairValueofDerivativeInstrumentsNotDesignatedasHedgingInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementFairValueofDerivativeInstrumentsNotDesignatedasHedgingInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_84f55a94-6c0c-4140-9dc0-7d8b4a579736" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f2974465-7bfd-4525-8a2e-6fbbaf3b2c16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_84f55a94-6c0c-4140-9dc0-7d8b4a579736" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f2974465-7bfd-4525-8a2e-6fbbaf3b2c16" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_da9e68b3-8745-4485-a29b-312ad3c5316b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f2974465-7bfd-4525-8a2e-6fbbaf3b2c16" xlink:to="loc_us-gaap_HedgingDesignationAxis_da9e68b3-8745-4485-a29b-312ad3c5316b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_da9e68b3-8745-4485-a29b-312ad3c5316b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_da9e68b3-8745-4485-a29b-312ad3c5316b" xlink:to="loc_us-gaap_HedgingDesignationDomain_da9e68b3-8745-4485-a29b-312ad3c5316b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_d9cbb0cc-64f6-448a-825e-c48c9655e7af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_da9e68b3-8745-4485-a29b-312ad3c5316b" xlink:to="loc_us-gaap_HedgingDesignationDomain_d9cbb0cc-64f6-448a-825e-c48c9655e7af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_1648c915-af1a-488e-acc5-3756d7adc9ca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_d9cbb0cc-64f6-448a-825e-c48c9655e7af" xlink:to="loc_us-gaap_NondesignatedMember_1648c915-af1a-488e-acc5-3756d7adc9ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_a6e32edb-1b57-4492-b001-ae8c21a9cac6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f2974465-7bfd-4525-8a2e-6fbbaf3b2c16" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_a6e32edb-1b57-4492-b001-ae8c21a9cac6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_a6e32edb-1b57-4492-b001-ae8c21a9cac6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a6e32edb-1b57-4492-b001-ae8c21a9cac6" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_a6e32edb-1b57-4492-b001-ae8c21a9cac6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_4a2c27ea-1d4c-4093-9d1e-7798bca70e17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a6e32edb-1b57-4492-b001-ae8c21a9cac6" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_4a2c27ea-1d4c-4093-9d1e-7798bca70e17" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_1ea2f616-dcac-4b05-9733-bd030affe08e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_4a2c27ea-1d4c-4093-9d1e-7798bca70e17" xlink:to="loc_us-gaap_CommodityContractMember_1ea2f616-dcac-4b05-9733-bd030affe08e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_4f1d4a67-84e8-411b-b52a-3ca59f2d274d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_f2974465-7bfd-4525-8a2e-6fbbaf3b2c16" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_4f1d4a67-84e8-411b-b52a-3ca59f2d274d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4f1d4a67-84e8-411b-b52a-3ca59f2d274d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_4f1d4a67-84e8-411b-b52a-3ca59f2d274d" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_4f1d4a67-84e8-411b-b52a-3ca59f2d274d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_7eda4209-b179-45ac-8ffe-82d2c86776cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_4f1d4a67-84e8-411b-b52a-3ca59f2d274d" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_7eda4209-b179-45ac-8ffe-82d2c86776cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableMember_8e729416-f93e-4626-abdf-816a8cb9bc62" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_7eda4209-b179-45ac-8ffe-82d2c86776cf" xlink:to="loc_us-gaap_AccountsPayableMember_8e729416-f93e-4626-abdf-816a8cb9bc62" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_4966db5e-5034-4623-88e3-aa7bda611f67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_84f55a94-6c0c-4140-9dc0-7d8b4a579736" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_4966db5e-5034-4623-88e3-aa7bda611f67" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementRecognizedGainsandLossesforDerivativeInstrumentsNotDesignatedasHedgingInstrumentsDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancialInstrumentsandRiskManagementRecognizedGainsandLossesforDerivativeInstrumentsNotDesignatedasHedgingInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementRecognizedGainsandLossesforDerivativeInstrumentsNotDesignatedasHedgingInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_0c7bb43f-9ec2-4eed-9383-9627cb355022" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_de4f2488-348e-4e0b-84be-d42976cfe272" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_0c7bb43f-9ec2-4eed-9383-9627cb355022" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_de4f2488-348e-4e0b-84be-d42976cfe272" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_d60aeff2-b10e-47b8-b41b-5dd71e06b5e9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_de4f2488-348e-4e0b-84be-d42976cfe272" xlink:to="loc_us-gaap_HedgingDesignationAxis_d60aeff2-b10e-47b8-b41b-5dd71e06b5e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_d60aeff2-b10e-47b8-b41b-5dd71e06b5e9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_d60aeff2-b10e-47b8-b41b-5dd71e06b5e9" xlink:to="loc_us-gaap_HedgingDesignationDomain_d60aeff2-b10e-47b8-b41b-5dd71e06b5e9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_08843830-f145-43f8-9e78-28d5b2f534c2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_d60aeff2-b10e-47b8-b41b-5dd71e06b5e9" xlink:to="loc_us-gaap_HedgingDesignationDomain_08843830-f145-43f8-9e78-28d5b2f534c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_1f852789-1f23-4deb-ba1a-d4257dc42e91" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_08843830-f145-43f8-9e78-28d5b2f534c2" xlink:to="loc_us-gaap_NondesignatedMember_1f852789-1f23-4deb-ba1a-d4257dc42e91" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_abe9e171-f75f-4745-974f-f80d0ecc5546" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_de4f2488-348e-4e0b-84be-d42976cfe272" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_abe9e171-f75f-4745-974f-f80d0ecc5546" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_abe9e171-f75f-4745-974f-f80d0ecc5546_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_abe9e171-f75f-4745-974f-f80d0ecc5546" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_abe9e171-f75f-4745-974f-f80d0ecc5546_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_28e6f1ed-15b8-41b9-b1e4-aa234b7335d0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_abe9e171-f75f-4745-974f-f80d0ecc5546" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_28e6f1ed-15b8-41b9-b1e4-aa234b7335d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_2c080400-7d2b-477a-b1d1-b0503587f9e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_28e6f1ed-15b8-41b9-b1e4-aa234b7335d0" xlink:to="loc_us-gaap_CommodityContractMember_2c080400-7d2b-477a-b1d1-b0503587f9e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_8ce7f23b-095a-4083-a365-aac9bb5b3e84" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_0c7bb43f-9ec2-4eed-9383-9627cb355022" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_8ce7f23b-095a-4083-a365-aac9bb5b3e84" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementCarryingValueofAssetsandLiabilitiesRecordedatFairValueonRecurringBasisDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancialInstrumentsandRiskManagementCarryingValueofAssetsandLiabilitiesRecordedatFairValueonRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementCarryingValueofAssetsandLiabilitiesRecordedatFairValueonRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_bf2d5d76-6ff5-48ac-bf25-caf3ba8ccd13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_b16ae5c7-c4c9-4ece-a01a-fabf40685948" xlink:href="mur-20250630.xsd#mur_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_bf2d5d76-6ff5-48ac-bf25-caf3ba8ccd13" xlink:to="loc_mur_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_b16ae5c7-c4c9-4ece-a01a-fabf40685948" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_dd345b13-1d6e-4092-aaab-df0a5f5d0393" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mur_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_b16ae5c7-c4c9-4ece-a01a-fabf40685948" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_dd345b13-1d6e-4092-aaab-df0a5f5d0393" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_dd345b13-1d6e-4092-aaab-df0a5f5d0393_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_dd345b13-1d6e-4092-aaab-df0a5f5d0393" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_dd345b13-1d6e-4092-aaab-df0a5f5d0393_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_666ab2ed-8038-4728-be96-72f275128822" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_dd345b13-1d6e-4092-aaab-df0a5f5d0393" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_666ab2ed-8038-4728-be96-72f275128822" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_36cd122f-5122-4613-8024-13e7b53992bc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_666ab2ed-8038-4728-be96-72f275128822" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_36cd122f-5122-4613-8024-13e7b53992bc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_38f13e38-402b-41d8-9fc5-263db534fc82" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mur_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_b16ae5c7-c4c9-4ece-a01a-fabf40685948" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_38f13e38-402b-41d8-9fc5-263db534fc82" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_38f13e38-402b-41d8-9fc5-263db534fc82_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_38f13e38-402b-41d8-9fc5-263db534fc82" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_38f13e38-402b-41d8-9fc5-263db534fc82_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e330befa-32ce-4033-bb64-9b5ca22bcb3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_38f13e38-402b-41d8-9fc5-263db534fc82" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e330befa-32ce-4033-bb64-9b5ca22bcb3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_e4fe679e-54eb-48f7-b1a1-29a75fce642f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e330befa-32ce-4033-bb64-9b5ca22bcb3b" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_e4fe679e-54eb-48f7-b1a1-29a75fce642f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_38dafa8b-7509-4500-8cba-bf3119594dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e330befa-32ce-4033-bb64-9b5ca22bcb3b" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_38dafa8b-7509-4500-8cba-bf3119594dfa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_4790764b-35db-4993-96f7-928c35330cb6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e330befa-32ce-4033-bb64-9b5ca22bcb3b" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_4790764b-35db-4993-96f7-928c35330cb6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_8bac53cf-3cd5-47d8-bf6e-f9be641da8d8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_mur_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_b16ae5c7-c4c9-4ece-a01a-fabf40685948" xlink:to="loc_us-gaap_FinancialInstrumentAxis_8bac53cf-3cd5-47d8-bf6e-f9be641da8d8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8bac53cf-3cd5-47d8-bf6e-f9be641da8d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_8bac53cf-3cd5-47d8-bf6e-f9be641da8d8" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8bac53cf-3cd5-47d8-bf6e-f9be641da8d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6581f7a2-77ac-4fc3-a5bc-ad5b05598b12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_8bac53cf-3cd5-47d8-bf6e-f9be641da8d8" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6581f7a2-77ac-4fc3-a5bc-ad5b05598b12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommodityContractMember_999d6d05-4c69-48b6-9093-a1bd79c275cf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommodityContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6581f7a2-77ac-4fc3-a5bc-ad5b05598b12" xlink:to="loc_us-gaap_CommodityContractMember_999d6d05-4c69-48b6-9093-a1bd79c275cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_NonqualifiedEmployeeSavingsPlansMember_75495231-9f81-4594-b7c4-e4fbc94d628e" xlink:href="mur-20250630.xsd#mur_NonqualifiedEmployeeSavingsPlansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6581f7a2-77ac-4fc3-a5bc-ad5b05598b12" xlink:to="loc_mur_NonqualifiedEmployeeSavingsPlansMember_75495231-9f81-4594-b7c4-e4fbc94d628e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_d6f04286-6163-4cd2-8008-6f0b282c149f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_bf2d5d76-6ff5-48ac-bf25-caf3ba8ccd13" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_d6f04286-6163-4cd2-8008-6f0b282c149f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_84d68d1a-3270-496b-bf07-adb6324d7fc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_d6f04286-6163-4cd2-8008-6f0b282c149f" xlink:to="loc_us-gaap_DerivativeLiabilities_84d68d1a-3270-496b-bf07-adb6324d7fc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations_21778eaf-fa53-40b9-beb0-299de07a56b9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_d6f04286-6163-4cd2-8008-6f0b282c149f" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations_21778eaf-fa53-40b9-beb0-299de07a56b9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_ea091f82-e8f9-4adc-ab2a-ebfa7bc82bf0" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_d6f04286-6163-4cd2-8008-6f0b282c149f" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_ea091f82-e8f9-4adc-ab2a-ebfa7bc82bf0" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementCarryingAmountsandEstimatedFairValuesofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancialInstrumentsandRiskManagementCarryingAmountsandEstimatedFairValuesofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementCarryingAmountsandEstimatedFairValuesofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_307fe823-b6c1-486d-98c3-986595db9723" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_faeec634-1022-4b43-99e9-adc9c3cc2eff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_307fe823-b6c1-486d-98c3-986595db9723" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_faeec634-1022-4b43-99e9-adc9c3cc2eff" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_3f1bed00-f2e8-4206-8c1c-9a5b61eaefb9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_faeec634-1022-4b43-99e9-adc9c3cc2eff" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_3f1bed00-f2e8-4206-8c1c-9a5b61eaefb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3f1bed00-f2e8-4206-8c1c-9a5b61eaefb9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_3f1bed00-f2e8-4206-8c1c-9a5b61eaefb9" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3f1bed00-f2e8-4206-8c1c-9a5b61eaefb9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4ee5637b-410c-45e7-8736-b57ca6c1e18e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_3f1bed00-f2e8-4206-8c1c-9a5b61eaefb9" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4ee5637b-410c-45e7-8736-b57ca6c1e18e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3c83d9d1-9e83-45be-8393-7f9fb1ae0434" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_4ee5637b-410c-45e7-8736-b57ca6c1e18e" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3c83d9d1-9e83-45be-8393-7f9fb1ae0434" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01e3c228-0f42-4f31-b919-cf3d3d532f47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3c83d9d1-9e83-45be-8393-7f9fb1ae0434" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01e3c228-0f42-4f31-b919-cf3d3d532f47" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_371f7d7d-ec56-4f56-9047-e16408c094d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_3c83d9d1-9e83-45be-8393-7f9fb1ae0434" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_371f7d7d-ec56-4f56-9047-e16408c094d4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_88edfe1b-5145-48a1-b1ba-a5a8598a28eb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_faeec634-1022-4b43-99e9-adc9c3cc2eff" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_88edfe1b-5145-48a1-b1ba-a5a8598a28eb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_88edfe1b-5145-48a1-b1ba-a5a8598a28eb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_88edfe1b-5145-48a1-b1ba-a5a8598a28eb" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_88edfe1b-5145-48a1-b1ba-a5a8598a28eb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_bc1fa36b-442e-46ec-81ff-7fdf59d1d3e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_88edfe1b-5145-48a1-b1ba-a5a8598a28eb" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_bc1fa36b-442e-46ec-81ff-7fdf59d1d3e2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_fee22e52-7b45-4434-8368-001a8d8b58af" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_bc1fa36b-442e-46ec-81ff-7fdf59d1d3e2" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_fee22e52-7b45-4434-8368-001a8d8b58af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_c5d9132c-4cd1-47c1-8146-af652efc85b6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_faeec634-1022-4b43-99e9-adc9c3cc2eff" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_c5d9132c-4cd1-47c1-8146-af652efc85b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_c5d9132c-4cd1-47c1-8146-af652efc85b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_c5d9132c-4cd1-47c1-8146-af652efc85b6" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_c5d9132c-4cd1-47c1-8146-af652efc85b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_349bfd0b-575d-4578-bb78-05ee1c62a70c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_c5d9132c-4cd1-47c1-8146-af652efc85b6" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_349bfd0b-575d-4578-bb78-05ee1c62a70c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_b72e64bd-69b7-4b71-b9ef-ac1210cadc26" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_349bfd0b-575d-4578-bb78-05ee1c62a70c" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_b72e64bd-69b7-4b71-b9ef-ac1210cadc26" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_140b4b7a-01bf-48cd-8600-2859092d2484" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_307fe823-b6c1-486d-98c3-986595db9723" xlink:to="loc_us-gaap_DebtInstrumentFairValue_140b4b7a-01bf-48cd-8600-2859092d2484" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementScheduleofNonrecurringFairValueMeasurementsDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#FinancialInstrumentsandRiskManagementScheduleofNonrecurringFairValueMeasurementsDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/FinancialInstrumentsandRiskManagementScheduleofNonrecurringFairValueMeasurementsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_c86e5e7c-3703-4bb7-a8ca-5a0055594a65" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_231bb75f-1acc-43d4-9633-80dd259e6d89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_c86e5e7c-3703-4bb7-a8ca-5a0055594a65" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_231bb75f-1acc-43d4-9633-80dd259e6d89" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_5155f4fb-3cbd-40d1-9fdf-ad9847cd0864" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_231bb75f-1acc-43d4-9633-80dd259e6d89" xlink:to="loc_srt_StatementGeographicalAxis_5155f4fb-3cbd-40d1-9fdf-ad9847cd0864" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_5155f4fb-3cbd-40d1-9fdf-ad9847cd0864_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_5155f4fb-3cbd-40d1-9fdf-ad9847cd0864" xlink:to="loc_srt_SegmentGeographicalDomain_5155f4fb-3cbd-40d1-9fdf-ad9847cd0864_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_b5216b8a-4091-440f-8d8c-f7d142d60111" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_5155f4fb-3cbd-40d1-9fdf-ad9847cd0864" xlink:to="loc_srt_SegmentGeographicalDomain_b5216b8a-4091-440f-8d8c-f7d142d60111" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_UnitedStatesOffshoreMember_1eb84187-0401-40cb-9acb-1adab8211b7a" xlink:href="mur-20250630.xsd#mur_UnitedStatesOffshoreMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_b5216b8a-4091-440f-8d8c-f7d142d60111" xlink:to="loc_mur_UnitedStatesOffshoreMember_1eb84187-0401-40cb-9acb-1adab8211b7a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_27dd755d-ab6c-4ce9-a098-3715d0377c9f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_231bb75f-1acc-43d4-9633-80dd259e6d89" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_27dd755d-ab6c-4ce9-a098-3715d0377c9f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_27dd755d-ab6c-4ce9-a098-3715d0377c9f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_27dd755d-ab6c-4ce9-a098-3715d0377c9f" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_27dd755d-ab6c-4ce9-a098-3715d0377c9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9ac2170-9bc7-492b-852e-923e2acaf46c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_27dd755d-ab6c-4ce9-a098-3715d0377c9f" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9ac2170-9bc7-492b-852e-923e2acaf46c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_5f5b89fa-ac23-47c4-8f10-7998c8502584" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9ac2170-9bc7-492b-852e-923e2acaf46c" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_5f5b89fa-ac23-47c4-8f10-7998c8502584" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_76e16ed4-4cfc-4af7-a7b2-06e7cc9192ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9ac2170-9bc7-492b-852e-923e2acaf46c" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_76e16ed4-4cfc-4af7-a7b2-06e7cc9192ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_bf43fe2d-d8d6-4673-b9f4-16aa021222ff" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e9ac2170-9bc7-492b-852e-923e2acaf46c" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_bf43fe2d-d8d6-4673-b9f4-16aa021222ff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ee1f4ade-3d13-43f4-aa8f-b1801e98912f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_231bb75f-1acc-43d4-9633-80dd259e6d89" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ee1f4ade-3d13-43f4-aa8f-b1801e98912f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee1f4ade-3d13-43f4-aa8f-b1801e98912f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ee1f4ade-3d13-43f4-aa8f-b1801e98912f" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee1f4ade-3d13-43f4-aa8f-b1801e98912f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_77208031-b63f-4cc7-80c3-923e6de34307" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_ee1f4ade-3d13-43f4-aa8f-b1801e98912f" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_77208031-b63f-4cc7-80c3-923e6de34307" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsNonrecurringMember_8a719885-48d3-45d4-9943-6d33e490ca0f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueMeasurementsNonrecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_77208031-b63f-4cc7-80c3-923e6de34307" xlink:to="loc_us-gaap_FairValueMeasurementsNonrecurringMember_8a719885-48d3-45d4-9943-6d33e490ca0f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_8939e8b0-1d6e-45eb-ba98-700bec48a303" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_c86e5e7c-3703-4bb7-a8ca-5a0055594a65" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_8939e8b0-1d6e-45eb-ba98-700bec48a303" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_OilandGasPropertyNetPriortoImpairment_34da0c87-1794-4caf-92d0-dbf535218852" xlink:href="mur-20250630.xsd#mur_OilandGasPropertyNetPriortoImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_c86e5e7c-3703-4bb7-a8ca-5a0055594a65" xlink:to="loc_mur_OilandGasPropertyNetPriortoImpairment_34da0c87-1794-4caf-92d0-dbf535218852" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfOilAndGasProperties_bd9e7d69-ff75-4963-8f8d-ff66f19d6879" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfOilAndGasProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_c86e5e7c-3703-4bb7-a8ca-5a0055594a65" xlink:to="loc_us-gaap_ImpairmentOfOilAndGasProperties_bd9e7d69-ff75-4963-8f8d-ff66f19d6879" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/AccumulatedOtherComprehensiveLossDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#AccumulatedOtherComprehensiveLossDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/AccumulatedOtherComprehensiveLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_d0322737-7c13-49ce-baf3-86074b07ba5e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_36264654-b700-4f9b-8024-a85b38e66791" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_d0322737-7c13-49ce-baf3-86074b07ba5e" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_36264654-b700-4f9b-8024-a85b38e66791" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_478ef185-7153-4fd0-a74d-dae49ab87993" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_36264654-b700-4f9b-8024-a85b38e66791" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_478ef185-7153-4fd0-a74d-dae49ab87993" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_478ef185-7153-4fd0-a74d-dae49ab87993_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_478ef185-7153-4fd0-a74d-dae49ab87993" xlink:to="loc_us-gaap_EquityComponentDomain_478ef185-7153-4fd0-a74d-dae49ab87993_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_1aa45abb-129b-48a1-912e-ef18ebf34764" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_478ef185-7153-4fd0-a74d-dae49ab87993" xlink:to="loc_us-gaap_EquityComponentDomain_1aa45abb-129b-48a1-912e-ef18ebf34764" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e348f748-4b72-47a9-b5ad-aa245965e20d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_1aa45abb-129b-48a1-912e-ef18ebf34764" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e348f748-4b72-47a9-b5ad-aa245965e20d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_086b41cf-d110-4a9b-9d12-5a23d9fbe17d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e348f748-4b72-47a9-b5ad-aa245965e20d" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_086b41cf-d110-4a9b-9d12-5a23d9fbe17d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_e86d50dd-8070-4331-9f75-abdf8cde2467" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e348f748-4b72-47a9-b5ad-aa245965e20d" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_e86d50dd-8070-4331-9f75-abdf8cde2467" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_0845c843-fb4b-4d32-b2e3-012bc146cf67" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_d0322737-7c13-49ce-baf3-86074b07ba5e" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_0845c843-fb4b-4d32-b2e3-012bc146cf67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_5bcb192f-4a38-4576-be89-bac809c0dc61" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_0845c843-fb4b-4d32-b2e3-012bc146cf67" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_5bcb192f-4a38-4576-be89-bac809c0dc61" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncomeAbstract_f000b827-dcdd-43f0-a0ce-b230626a9240" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherIncomeAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_0845c843-fb4b-4d32-b2e3-012bc146cf67" xlink:to="loc_us-gaap_OtherIncomeAbstract_f000b827-dcdd-43f0-a0ce-b230626a9240" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_846b8697-0b2a-471d-b860-74c09e01fe4c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeAbstract_f000b827-dcdd-43f0-a0ce-b230626a9240" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_846b8697-0b2a-471d-b860-74c09e01fe4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_80392186-c4eb-471b-99fd-0ba1e7a47aad" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeAbstract_f000b827-dcdd-43f0-a0ce-b230626a9240" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_80392186-c4eb-471b-99fd-0ba1e7a47aad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_5e69d96b-1186-4bae-830d-7657b6e8b1ee" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherIncomeAbstract_f000b827-dcdd-43f0-a0ce-b230626a9240" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_5e69d96b-1186-4bae-830d-7657b6e8b1ee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_d5181cd7-89a7-4308-8a0f-f75f3c55f2da" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_6afb9942-e6cd-4936-8fcf-67703710bd17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_d0322737-7c13-49ce-baf3-86074b07ba5e" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_6afb9942-e6cd-4936-8fcf-67703710bd17" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_02699af7-b50f-4383-9ffb-484e3e1ef19e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_d0322737-7c13-49ce-baf3-86074b07ba5e" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_02699af7-b50f-4383-9ffb-484e3e1ef19e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.murphyoilcorp.com/role/BusinessSegmentsDetails" xlink:type="simple" xlink:href="mur-20250630.xsd#BusinessSegmentsDetails"/>
  <link:definitionLink xlink:role="http://www.murphyoilcorp.com/role/BusinessSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c5e15df6-ec35-455f-b243-38c3d5b33119" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c5e15df6-ec35-455f-b243-38c3d5b33119" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_51c3e56e-ce9a-4e59-992a-4e14869e6d9c" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c5e15df6-ec35-455f-b243-38c3d5b33119" xlink:to="loc_srt_ConsolidationItemsAxis_51c3e56e-ce9a-4e59-992a-4e14869e6d9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_51c3e56e-ce9a-4e59-992a-4e14869e6d9c_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_51c3e56e-ce9a-4e59-992a-4e14869e6d9c" xlink:to="loc_srt_ConsolidationItemsDomain_51c3e56e-ce9a-4e59-992a-4e14869e6d9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_48358409-2941-41cd-9142-5e815fbdb83d" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_51c3e56e-ce9a-4e59-992a-4e14869e6d9c" xlink:to="loc_srt_ConsolidationItemsDomain_48358409-2941-41cd-9142-5e815fbdb83d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_2e08f8de-370e-4351-b864-a9924791f4d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_48358409-2941-41cd-9142-5e815fbdb83d" xlink:to="loc_us-gaap_OperatingSegmentsMember_2e08f8de-370e-4351-b864-a9924791f4d9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_0100c571-fb4d-451b-8a98-88c1c48ce19a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_48358409-2941-41cd-9142-5e815fbdb83d" xlink:to="loc_us-gaap_CorporateNonSegmentMember_0100c571-fb4d-451b-8a98-88c1c48ce19a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_92d00e91-17a6-4883-b81e-3604164c4a4a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c5e15df6-ec35-455f-b243-38c3d5b33119" xlink:to="loc_srt_ProductOrServiceAxis_92d00e91-17a6-4883-b81e-3604164c4a4a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_92d00e91-17a6-4883-b81e-3604164c4a4a_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_92d00e91-17a6-4883-b81e-3604164c4a4a" xlink:to="loc_srt_ProductsAndServicesDomain_92d00e91-17a6-4883-b81e-3604164c4a4a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_82fc8dec-1ca8-462e-ab55-49e18443e3c8" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_92d00e91-17a6-4883-b81e-3604164c4a4a" xlink:to="loc_srt_ProductsAndServicesDomain_82fc8dec-1ca8-462e-ab55-49e18443e3c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasExplorationAndProductionMember_465bc975-e204-49dd-ae9c-55e7f0a44658" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasExplorationAndProductionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_82fc8dec-1ca8-462e-ab55-49e18443e3c8" xlink:to="loc_us-gaap_OilAndGasExplorationAndProductionMember_465bc975-e204-49dd-ae9c-55e7f0a44658" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OilAndGasPurchasedMember_3e0a9989-572f-4389-a26f-37e0a67392d5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OilAndGasPurchasedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_82fc8dec-1ca8-462e-ab55-49e18443e3c8" xlink:to="loc_us-gaap_OilAndGasPurchasedMember_3e0a9989-572f-4389-a26f-37e0a67392d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_2811c84d-45a1-4b2a-90a0-0e70e60c6054" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c5e15df6-ec35-455f-b243-38c3d5b33119" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_2811c84d-45a1-4b2a-90a0-0e70e60c6054" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_2811c84d-45a1-4b2a-90a0-0e70e60c6054_default" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2811c84d-45a1-4b2a-90a0-0e70e60c6054" xlink:to="loc_us-gaap_SegmentDomain_2811c84d-45a1-4b2a-90a0-0e70e60c6054_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6ed9d19e-a678-4376-a69a-5db328beada7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2811c84d-45a1-4b2a-90a0-0e70e60c6054" xlink:to="loc_us-gaap_SegmentDomain_6ed9d19e-a678-4376-a69a-5db328beada7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_UnitedStatesSegmentMember_7e937c69-0297-4b98-be25-9493779951cb" xlink:href="mur-20250630.xsd#mur_UnitedStatesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_6ed9d19e-a678-4376-a69a-5db328beada7" xlink:to="loc_mur_UnitedStatesSegmentMember_7e937c69-0297-4b98-be25-9493779951cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_CanadaSegmentMember_a5fbe185-a1a4-4c68-8039-d98b65e86698" xlink:href="mur-20250630.xsd#mur_CanadaSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_6ed9d19e-a678-4376-a69a-5db328beada7" xlink:to="loc_mur_CanadaSegmentMember_a5fbe185-a1a4-4c68-8039-d98b65e86698" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_OtherCountriesSegmentMember_78bcd2b7-0bdb-40a5-817f-e331da16d36b" xlink:href="mur-20250630.xsd#mur_OtherCountriesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_6ed9d19e-a678-4376-a69a-5db328beada7" xlink:to="loc_mur_OtherCountriesSegmentMember_78bcd2b7-0bdb-40a5-817f-e331da16d36b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_63cb22c2-ff33-48bd-815d-55414fa38eea" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c5e15df6-ec35-455f-b243-38c3d5b33119" xlink:to="loc_srt_RangeAxis_63cb22c2-ff33-48bd-815d-55414fa38eea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_63cb22c2-ff33-48bd-815d-55414fa38eea_default" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_63cb22c2-ff33-48bd-815d-55414fa38eea" xlink:to="loc_srt_RangeMember_63cb22c2-ff33-48bd-815d-55414fa38eea_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_968803f0-ef2c-4cd4-ab29-faf0f0525228" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_63cb22c2-ff33-48bd-815d-55414fa38eea" xlink:to="loc_srt_RangeMember_968803f0-ef2c-4cd4-ab29-faf0f0525228" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_a4361ddf-26f4-483f-96f9-0b1bc0269a2a" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_968803f0-ef2c-4cd4-ab29-faf0f0525228" xlink:to="loc_srt_MinimumMember_a4361ddf-26f4-483f-96f9-0b1bc0269a2a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7e4b105c-6cb3-4466-b757-2f931f7f1be4" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_968803f0-ef2c-4cd4-ab29-faf0f0525228" xlink:to="loc_srt_MaximumMember_7e4b105c-6cb3-4466-b757-2f931f7f1be4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_RevenueFromContractWithCustomerExcludingAssessedTaxAndDiscontinuedOperations_b66fe0d0-329f-49c0-980e-93fc0a6c38e5" xlink:href="mur-20250630.xsd#mur_RevenueFromContractWithCustomerExcludingAssessedTaxAndDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_RevenueFromContractWithCustomerExcludingAssessedTaxAndDiscontinuedOperations_b66fe0d0-329f-49c0-980e-93fc0a6c38e5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_GainLossOnSaleOfAssetsDerivativesAndOtherIncome_57327229-b1ea-4f04-8458-0c657e1735f7" xlink:href="mur-20250630.xsd#mur_GainLossOnSaleOfAssetsDerivativesAndOtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_GainLossOnSaleOfAssetsDerivativesAndOtherIncome_57327229-b1ea-4f04-8458-0c657e1735f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_RevenuesAdjustments_a83d171d-4a7d-4b75-ac0d-0e02be787661" xlink:href="mur-20250630.xsd#mur_RevenuesAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_RevenuesAdjustments_a83d171d-4a7d-4b75-ac0d-0e02be787661" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseTaxes_5ef63efb-d4f1-4ab7-b46a-6ad7c45ea37e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseTaxes"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseTaxes_5ef63efb-d4f1-4ab7-b46a-6ad7c45ea37e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseMaintenance_09563a31-cad2-4549-80f2-d6ac64361b97" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseMaintenance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseMaintenance_09563a31-cad2-4549-80f2-d6ac64361b97" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UtilitiesOperatingExpenseOperations_e303cc77-f6f1-4f99-8662-2c0260160aca" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_UtilitiesOperatingExpenseOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_UtilitiesOperatingExpenseOperations_e303cc77-f6f1-4f99-8662-2c0260160aca" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_74d7cf4a-f8e0-4d55-a1ae-8c552c2e59e2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_OperatingLeaseExpense_74d7cf4a-f8e0-4d55-a1ae-8c552c2e59e2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductionTaxExpense_d1506e6f-1780-4eca-a6be-8e6bba074425" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProductionTaxExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_ProductionTaxExpense_d1506e6f-1780-4eca-a6be-8e6bba074425" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_TransportationGatheringandProcessingCosts_9eb905d7-6c91-404a-8d0a-3ed7322383d3" xlink:href="mur-20250630.xsd#mur_TransportationGatheringandProcessingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_TransportationGatheringandProcessingCosts_9eb905d7-6c91-404a-8d0a-3ed7322383d3" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_e5c67f87-1f9a-45de-8e28-290bae6d9f64" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_e5c67f87-1f9a-45de-8e28-290bae6d9f64" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_SellingGeneralAndAdministrativeExpenseIncludingDiscontinuesOperations_3f772556-4bc8-42ed-8d45-fba979092b4f" xlink:href="mur-20250630.xsd#mur_SellingGeneralAndAdministrativeExpenseIncludingDiscontinuesOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_SellingGeneralAndAdministrativeExpenseIncludingDiscontinuesOperations_3f772556-4bc8-42ed-8d45-fba979092b4f" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_OilAndGasResultOfOperationExplorationCostAdjustments_08adf040-3f92-4624-a6e7-b0235879b211" xlink:href="mur-20250630.xsd#mur_OilAndGasResultOfOperationExplorationCostAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_OilAndGasResultOfOperationExplorationCostAdjustments_08adf040-3f92-4624-a6e7-b0235879b211" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_OilAndGasResultOfOperationDryHoleCostAdjustment_dd98880a-bca4-4fdb-8859-c13639c55ad5" xlink:href="mur-20250630.xsd#mur_OilAndGasResultOfOperationDryHoleCostAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_OilAndGasResultOfOperationDryHoleCostAdjustment_dd98880a-bca4-4fdb-8859-c13639c55ad5" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResultsOfOperationsExpenseOther_6f80f47b-bb78-4a75-8b80-3cfc577ab2e8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ResultsOfOperationsExpenseOther"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_ResultsOfOperationsExpenseOther_6f80f47b-bb78-4a75-8b80-3cfc577ab2e8" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExplorationExpense_8ec52f0b-1f6f-45a5-a555-c1425228c18e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ExplorationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_ExplorationExpense_8ec52f0b-1f6f-45a5-a555-c1425228c18e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_DepreciationDepletionAndAmortizationAdjustment_7ce1128a-0378-45f1-9398-32f69513c0c7" xlink:href="mur-20250630.xsd#mur_DepreciationDepletionAndAmortizationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_DepreciationDepletionAndAmortizationAdjustment_7ce1128a-0378-45f1-9398-32f69513c0c7" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfOilAndGasProperties_f30ebd5e-841e-42ff-9d18-9aef2cbc3a0e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfOilAndGasProperties"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_ImpairmentOfOilAndGasProperties_f30ebd5e-841e-42ff-9d18-9aef2cbc3a0e" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_eebd63cb-e0ff-4bcc-812d-ca1e6bb1ba5b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationAccretionExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_AssetRetirementObligationAccretionExpense_eebd63cb-e0ff-4bcc-812d-ca1e6bb1ba5b" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_OtherCostAndExpenseOperatingAdjustment_d309e6da-05ee-46a0-bd5d-543d54c4d0ab" xlink:href="mur-20250630.xsd#mur_OtherCostAndExpenseOperatingAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_OtherCostAndExpenseOperatingAdjustment_d309e6da-05ee-46a0-bd5d-543d54c4d0ab" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_OtherNonoperatingIncomeExpenseAdjustment_0184cb8c-e31c-45fd-ae24-ebf719e38047" xlink:href="mur-20250630.xsd#mur_OtherNonoperatingIncomeExpenseAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_OtherNonoperatingIncomeExpenseAdjustment_0184cb8c-e31c-45fd-ae24-ebf719e38047" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_ba0ebf7a-dc63-47f0-b436-5c0fb258a26e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_InterestExpenseNonoperating_ba0ebf7a-dc63-47f0-b436-5c0fb258a26e" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_d0e30576-08cc-429c-9795-5cf8b934d795" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_d0e30576-08cc-429c-9795-5cf8b934d795" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_DeferredIncomeTaxExpenseBenefitAdjustment_2ceb292d-996a-46e7-bfaf-ff6fb2851f85" xlink:href="mur-20250630.xsd#mur_DeferredIncomeTaxExpenseBenefitAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_DeferredIncomeTaxExpenseBenefitAdjustment_2ceb292d-996a-46e7-bfaf-ff6fb2851f85" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_mur_IncomeTaxExpenseBenefitAdjustment_e95022b4-74b6-4c05-a390-453bbfd9ed07" xlink:href="mur-20250630.xsd#mur_IncomeTaxExpenseBenefitAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_mur_IncomeTaxExpenseBenefitAdjustment_e95022b4-74b6-4c05-a390-453bbfd9ed07" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_8fa8831b-7f0e-4f0c-9222-791ba2d5884d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_8fa8831b-7f0e-4f0c-9222-791ba2d5884d" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_a10e5242-8f51-47b7-adc0-cf57fdfffbcf" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_ProfitLoss_a10e5242-8f51-47b7-adc0-cf57fdfffbcf" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_c85f8465-0dcc-4f12-8a37-367cbb12ce05" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentExpenditureAdditionToLongLivedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_c85f8465-0dcc-4f12-8a37-367cbb12ce05" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_e7513846-c144-4127-8e01-56e71261da5f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_00d0a534-68b4-4815-93af-59ea8117aa47" xlink:to="loc_us-gaap_Assets_e7513846-c144-4127-8e01-56e71261da5f" xlink:type="arc" order="27"/>
  </link:definitionLink>
</link:linkbase>
