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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f4207-029b-7a50-8cf9-c30ba5d14410,g:f67300e9-b470-4628-8bbb-7d6b37de3375-->
<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.bestbuy.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="bby-20260801.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f4207-0352-7a0d-a6c6-e9762c640c1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019f4207-0352-78c6-afdd-5eeb369f34f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019f4207-0352-7a0d-a6c6-e9762c640c1b" xlink:to="loc_us-gaap_StatementTable_019f4207-0352-78c6-afdd-5eeb369f34f6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f4207-0352-7960-bb90-d588e48bb1f7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019f4207-0352-78c6-afdd-5eeb369f34f6" xlink:to="loc_srt_ProductOrServiceAxis_019f4207-0352-7960-bb90-d588e48bb1f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f4207-0352-7960-bb90-d588e48bb1f7_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019f4207-0352-7960-bb90-d588e48bb1f7" xlink:to="loc_srt_ProductsAndServicesDomain_019f4207-0352-7960-bb90-d588e48bb1f7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f4207-0352-7441-bc21-d2fc99154042" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019f4207-0352-7960-bb90-d588e48bb1f7" xlink:to="loc_srt_ProductsAndServicesDomain_019f4207-0352-7441-bc21-d2fc99154042" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_GiftCardMember_019f4207-0352-7302-bb43-8f99685c4992" xlink:href="bby-20260801.xsd#bby_GiftCardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-0352-7441-bc21-d2fc99154042" xlink:to="loc_bby_GiftCardMember_019f4207-0352-7302-bb43-8f99685c4992" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DeferredRevenueMember_019f4207-0352-76a7-95c9-e3876b31efcb" xlink:href="bby-20260801.xsd#bby_DeferredRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-0352-7441-bc21-d2fc99154042" xlink:to="loc_bby_DeferredRevenueMember_019f4207-0352-76a7-95c9-e3876b31efcb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f4207-0352-7a0d-a6c6-e9762c640c1b" xlink:to="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_019f4207-0352-7880-9e3b-3a0d5b5a78dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:to="loc_us-gaap_AssetsCurrentAbstract_019f4207-0352-7880-9e3b-3a0d5b5a78dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f4207-0352-7750-8bd1-014b8572c0ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019f4207-0352-7880-9e3b-3a0d5b5a78dd" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019f4207-0352-7750-8bd1-014b8572c0ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_019f4207-0352-767f-9c4b-697ceb0ceafe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivablesNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019f4207-0352-7880-9e3b-3a0d5b5a78dd" xlink:to="loc_us-gaap_ReceivablesNetCurrent_019f4207-0352-767f-9c4b-697ceb0ceafe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_019f4207-0352-7d3f-8003-0681af96884a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019f4207-0352-7880-9e3b-3a0d5b5a78dd" xlink:to="loc_us-gaap_InventoryNet_019f4207-0352-7d3f-8003-0681af96884a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_019f4207-0352-722b-9081-7d525db2e0d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019f4207-0352-7880-9e3b-3a0d5b5a78dd" xlink:to="loc_us-gaap_OtherAssetsCurrent_019f4207-0352-722b-9081-7d525db2e0d2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019f4207-0352-7660-b7e2-0b055ed658fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_019f4207-0352-7880-9e3b-3a0d5b5a78dd" xlink:to="loc_us-gaap_AssetsCurrent_019f4207-0352-7660-b7e2-0b055ed658fa" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019f4207-0352-7a8e-9849-eeee840ef559" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019f4207-0352-7a8e-9849-eeee840ef559" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019f4207-0352-73db-aa4d-001456eefdee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019f4207-0352-73db-aa4d-001456eefdee" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019f4207-0352-7889-9522-f94dd4cf4044" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:to="loc_us-gaap_Goodwill_019f4207-0352-7889-9522-f94dd4cf4044" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019f4207-0352-7bf3-908f-a9f30d7e2457" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019f4207-0352-7bf3-908f-a9f30d7e2457" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f4207-0352-7430-85a5-7df696c53fd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-700d-996c-72dc6c323838" xlink:to="loc_us-gaap_Assets_019f4207-0352-7430-85a5-7df696c53fd6" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f4207-0352-7a0d-a6c6-e9762c640c1b" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_019f4207-0352-7d97-a7ac-614d5fab39ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:to="loc_us-gaap_AccountsPayableCurrent_019f4207-0352-7d97-a7ac-614d5fab39ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019f4207-0352-7af5-8e2e-1899041e75e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019f4207-0352-7af5-8e2e-1899041e75e7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019f4207-0352-76fe-83ee-2091eef40466" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019f4207-0352-76fe-83ee-2091eef40466" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_019f4207-0352-7f65-8a8a-239ae79fc488" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_019f4207-0352-7f65-8a8a-239ae79fc488" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019f4207-0352-7822-868d-cdb4de8cb30e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019f4207-0352-7822-868d-cdb4de8cb30e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019f4207-0352-765e-a30b-9d4db3e26733" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019f4207-0352-765e-a30b-9d4db3e26733" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019f4207-0352-7538-898a-e7b816f4e036" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_019f4207-0352-7370-8790-de4f2bb1d538" xlink:to="loc_us-gaap_LiabilitiesCurrent_019f4207-0352-7538-898a-e7b816f4e036" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019f4207-0352-7aea-8709-3f3a55fb54c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019f4207-0352-7aea-8709-3f3a55fb54c1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f4207-0352-7822-a5c2-c599544fba9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f4207-0352-7822-a5c2-c599544fba9e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019f4207-0352-756d-b582-cfd083fb2472" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019f4207-0352-756d-b582-cfd083fb2472" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019f4207-0352-7fbb-966f-2d5cc49798df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019f4207-0352-7fbb-966f-2d5cc49798df" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:to="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_019f4207-0352-7051-8b57-900f4c6f6b0d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:to="loc_us-gaap_PreferredStockValue_019f4207-0352-7051-8b57-900f4c6f6b0d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019f4207-0352-7188-82f7-ef26d229782c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:to="loc_us-gaap_CommonStockValue_019f4207-0352-7188-82f7-ef26d229782c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_019f4207-0352-7588-af6a-5633f8d1bb9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:to="loc_us-gaap_AdditionalPaidInCapital_019f4207-0352-7588-af6a-5633f8d1bb9c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019f4207-0352-788f-857e-0b6704bf6e0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019f4207-0352-788f-857e-0b6704bf6e0e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019f4207-0352-7694-844d-74695d0951a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019f4207-0352-7694-844d-74695d0951a8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019f4207-0352-7242-a23d-8f3ae63fb97d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_019f4207-0352-7557-993c-5ffe24023a73" xlink:to="loc_us-gaap_StockholdersEquity_019f4207-0352-7242-a23d-8f3ae63fb97d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f4207-0352-7941-a0ee-f712de37482f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_019f4207-0352-7b4f-9799-94aa8bf2229c" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_019f4207-0352-7941-a0ee-f712de37482f" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/CondensedConsolidatedStatementsofChangesinShareholdersEquity" xlink:type="simple" xlink:href="bby-20260801.xsd#CondensedConsolidatedStatementsofChangesinShareholdersEquity"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/CondensedConsolidatedStatementsofChangesinShareholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f4207-0352-72ed-b85d-f7db0eb2b4df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019f4207-0352-7709-86f7-d9a2deb4fcee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019f4207-0352-72ed-b85d-f7db0eb2b4df" xlink:to="loc_us-gaap_StatementTable_019f4207-0352-7709-86f7-d9a2deb4fcee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019f4207-0352-70bc-828f-a0d66e10a97a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019f4207-0352-7709-86f7-d9a2deb4fcee" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019f4207-0352-70bc-828f-a0d66e10a97a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f4207-0352-70bc-828f-a0d66e10a97a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019f4207-0352-70bc-828f-a0d66e10a97a" xlink:to="loc_us-gaap_EquityComponentDomain_019f4207-0352-70bc-828f-a0d66e10a97a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f4207-0352-7039-afcd-e2b62d099956" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019f4207-0352-70bc-828f-a0d66e10a97a" xlink:to="loc_us-gaap_EquityComponentDomain_019f4207-0352-7039-afcd-e2b62d099956" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019f4207-0352-764d-a03c-0bf9076d1ad1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f4207-0352-7039-afcd-e2b62d099956" xlink:to="loc_us-gaap_CommonStockMember_019f4207-0352-764d-a03c-0bf9076d1ad1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019f4207-0352-7a66-aa6a-0229ba1d58fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f4207-0352-7039-afcd-e2b62d099956" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019f4207-0352-7a66-aa6a-0229ba1d58fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019f4207-0352-7336-971d-31d7366b97be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f4207-0352-7039-afcd-e2b62d099956" xlink:to="loc_us-gaap_RetainedEarningsMember_019f4207-0352-7336-971d-31d7366b97be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f4207-0352-7aa3-a1aa-8649f9f0f940" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f4207-0352-7039-afcd-e2b62d099956" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f4207-0352-7aa3-a1aa-8649f9f0f940" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f4207-0352-72ed-b85d-f7db0eb2b4df" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_019f4207-0352-77de-a902-b5185eaaea8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_SharesOutstanding_019f4207-0352-77de-a902-b5185eaaea8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f4207-0352-7769-87b4-d87b44db1983" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f4207-0352-7769-87b4-d87b44db1983" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019f4207-0352-7578-a6df-9c78d3d4c4f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_NetIncomeLoss_019f4207-0352-7578-a6df-9c78d3d4c4f8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_019f4207-0352-7682-a1d8-9005dccea86c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_019f4207-0352-7682-a1d8-9005dccea86c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_019f4207-0352-7419-8085-a364ed970a90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_019f4207-0352-7682-a1d8-9005dccea86c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_019f4207-0352-7419-8085-a364ed970a90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019f4207-0352-7feb-886c-a01ed1a03bec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019f4207-0352-7feb-886c-a01ed1a03bec" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_019f4207-0352-711c-abf4-3a7909aab8e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_019f4207-0352-711c-abf4-3a7909aab8e5" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_019f4207-0352-796e-89c4-b25fa2b2d619" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_019f4207-0352-796e-89c4-b25fa2b2d619" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_IncreaseDecreaseToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings_019f4207-0352-7431-9f5e-3b2bdd4a8620" xlink:href="bby-20260801.xsd#bby_IncreaseDecreaseToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_bby_IncreaseDecreaseToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings_019f4207-0352-7431-9f5e-3b2bdd4a8620" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_019f4207-0352-7c73-ab53-1e2bdf755c8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_019f4207-0352-7c73-ab53-1e2bdf755c8e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_StockRepurchasedDuringPeriodIncludingWrittenPrepaidPutOptionValue_019f4207-0352-7e10-b83a-20f403bf44c9" xlink:href="bby-20260801.xsd#bby_StockRepurchasedDuringPeriodIncludingWrittenPrepaidPutOptionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f4207-0352-7214-a28c-9ee3b61fdf20" xlink:to="loc_bby_StockRepurchasedDuringPeriodIncludingWrittenPrepaidPutOptionValue_019f4207-0352-7e10-b83a-20f403bf44c9" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_019f4207-0352-7ca3-8533-dc78db6f6850" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f4207-0352-7665-b773-091ba3b621e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/BasisofPresentationNarrativeDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#BasisofPresentationNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/BasisofPresentationNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingenciesLineItems_01a01fa2-2021-7832-9ca4-85382f53e63b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingenciesTable_01a01fa2-2021-7ebf-acf0-470226d7ef6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GainContingenciesLineItems_01a01fa2-2021-7832-9ca4-85382f53e63b" xlink:to="loc_us-gaap_GainContingenciesTable_01a01fa2-2021-7ebf-acf0-470226d7ef6e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingenciesByNatureAxis_01a01fa2-2021-7716-af80-fb75c9e0b313" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingenciesByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_GainContingenciesTable_01a01fa2-2021-7ebf-acf0-470226d7ef6e" xlink:to="loc_us-gaap_GainContingenciesByNatureAxis_01a01fa2-2021-7716-af80-fb75c9e0b313" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingencyNatureDomain_01a01fa2-2021-7716-af80-fb75c9e0b313_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis_01a01fa2-2021-7716-af80-fb75c9e0b313" xlink:to="loc_us-gaap_GainContingencyNatureDomain_01a01fa2-2021-7716-af80-fb75c9e0b313_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingencyNatureDomain_01a01fa2-2021-7ec0-bac5-fc2a62c75fb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis_01a01fa2-2021-7716-af80-fb75c9e0b313" xlink:to="loc_us-gaap_GainContingencyNatureDomain_01a01fa2-2021-7ec0-bac5-fc2a62c75fb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_IEEPATariffRefundMember_01a01fa2-2021-7c51-a612-2c76278e3c59" xlink:href="bby-20260801.xsd#bby_IEEPATariffRefundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GainContingencyNatureDomain_01a01fa2-2021-7ec0-bac5-fc2a62c75fb9" xlink:to="loc_bby_IEEPATariffRefundMember_01a01fa2-2021-7c51-a612-2c76278e3c59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a06245-851e-7a3d-8618-6a37c719dca3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_GainContingenciesTable_01a01fa2-2021-7ebf-acf0-470226d7ef6e" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a06245-851e-7a3d-8618-6a37c719dca3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a06245-851e-7a3d-8618-6a37c719dca3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a06245-851e-7a3d-8618-6a37c719dca3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a06245-851e-7a3d-8618-6a37c719dca3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a06245-851e-7db8-a628-1cde1a289c32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a06245-851e-7a3d-8618-6a37c719dca3" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a06245-851e-7db8-a628-1cde1a289c32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a06245-9e9a-73ae-a706-cd14c403da7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a06245-851e-7db8-a628-1cde1a289c32" xlink:to="loc_us-gaap_SubsequentEventMember_01a06245-9e9a-73ae-a706-cd14c403da7f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RecoveryOfDirectCosts_01a01fa2-2021-79cf-a15e-2995aa46eef7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RecoveryOfDirectCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GainContingenciesLineItems_01a01fa2-2021-7832-9ca4-85382f53e63b" xlink:to="loc_us-gaap_RecoveryOfDirectCosts_01a01fa2-2021-79cf-a15e-2995aa46eef7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplierFinanceProgramObligation_019f4207-0352-711f-9f42-5bc695ef0a81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SupplierFinanceProgramObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GainContingenciesLineItems_01a01fa2-2021-7832-9ca4-85382f53e63b" xlink:to="loc_us-gaap_SupplierFinanceProgramObligation_019f4207-0352-711f-9f42-5bc695ef0a81" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/RestructuringScheduleofRestructuringChargesDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#RestructuringScheduleofRestructuringChargesDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/RestructuringScheduleofRestructuringChargesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-71ec-8e07-4c5c14462a63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7b3c-a186-0e6c6afccf8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-71ec-8e07-4c5c14462a63" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7b3c-a186-0e6c6afccf8c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7621-a706-437a2809c5e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7b3c-a186-0e6c6afccf8c" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7621-a706-437a2809c5e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7621-a706-437a2809c5e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7621-a706-437a2809c5e4" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7621-a706-437a2809c5e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7dc2-9a32-9abcc7011f06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7621-a706-437a2809c5e4" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7dc2-9a32-9abcc7011f06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-7add-8d4a-b9a826e4a734" xlink:href="bby-20260801.xsd#bby_Fiscal2026LaborStoreOptimizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7dc2-9a32-9abcc7011f06" xlink:to="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-7add-8d4a-b9a826e4a734" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_BestBuyHealthOptimizationAndChinaSourcingInitiativeMember_019f4207-0352-7e13-a88a-c95c8174a0f1" xlink:href="bby-20260801.xsd#bby_BestBuyHealthOptimizationAndChinaSourcingInitiativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7dc2-9a32-9abcc7011f06" xlink:to="loc_bby_BestBuyHealthOptimizationAndChinaSourcingInitiativeMember_019f4207-0352-7e13-a88a-c95c8174a0f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember_019f4207-0352-7340-9a48-3cfdcb701dcc" xlink:href="bby-20260801.xsd#bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7dc2-9a32-9abcc7011f06" xlink:to="loc_bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember_019f4207-0352-7340-9a48-3cfdcb701dcc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_RestructuringChargesIncludingInventoryWriteDown_019f4207-0352-753a-926c-75e2214edeb6" xlink:href="bby-20260801.xsd#bby_RestructuringChargesIncludingInventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-71ec-8e07-4c5c14462a63" xlink:to="loc_bby_RestructuringChargesIncludingInventoryWriteDown_019f4207-0352-753a-926c-75e2214edeb6" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/RestructuringScheduleofRestructuringInitiativeDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#RestructuringScheduleofRestructuringInitiativeDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/RestructuringScheduleofRestructuringInitiativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-76cd-b3a6-f86e62191e35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-75bc-8522-56f431de3644" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-76cd-b3a6-f86e62191e35" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-75bc-8522-56f431de3644" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7d5b-8de8-6c0c947d7765" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-75bc-8522-56f431de3644" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7d5b-8de8-6c0c947d7765" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7d5b-8de8-6c0c947d7765_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7d5b-8de8-6c0c947d7765" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7d5b-8de8-6c0c947d7765_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7516-8888-fad51c726513" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7d5b-8de8-6c0c947d7765" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7516-8888-fad51c726513" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_019f4207-0352-7308-abe6-96c67b40b743" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7516-8888-fad51c726513" xlink:to="loc_us-gaap_EmployeeSeveranceMember_019f4207-0352-7308-abe6-96c67b40b743" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_AssetImpairmentAndOtherRestructuringCostsMember_019f4207-0352-7cef-b8b6-12f16a47c175" xlink:href="bby-20260801.xsd#bby_AssetImpairmentAndOtherRestructuringCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7516-8888-fad51c726513" xlink:to="loc_bby_AssetImpairmentAndOtherRestructuringCostsMember_019f4207-0352-7cef-b8b6-12f16a47c175" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7800-bc1d-b6c34be4481d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-75bc-8522-56f431de3644" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7800-bc1d-b6c34be4481d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7800-bc1d-b6c34be4481d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7800-bc1d-b6c34be4481d" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7800-bc1d-b6c34be4481d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-72bf-b0bb-021cf10424b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7800-bc1d-b6c34be4481d" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-72bf-b0bb-021cf10424b2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-7a03-a623-6683a03aecb9" xlink:href="bby-20260801.xsd#bby_Fiscal2026LaborStoreOptimizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-72bf-b0bb-021cf10424b2" xlink:to="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-7a03-a623-6683a03aecb9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7b1b-9b86-8f339d8a74cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-75bc-8522-56f431de3644" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7b1b-9b86-8f339d8a74cc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-0352-7b1b-9b86-8f339d8a74cc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7b1b-9b86-8f339d8a74cc" xlink:to="loc_us-gaap_SegmentDomain_019f4207-0352-7b1b-9b86-8f339d8a74cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-0352-7bdc-bca6-c847b9b84117" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7b1b-9b86-8f339d8a74cc" xlink:to="loc_us-gaap_SegmentDomain_019f4207-0352-7bdc-bca6-c847b9b84117" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DomesticSegmentMember_019f4207-0352-7f67-9c0e-ebd04c11c355" xlink:href="bby-20260801.xsd#bby_DomesticSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-0352-7bdc-bca6-c847b9b84117" xlink:to="loc_bby_DomesticSegmentMember_019f4207-0352-7f67-9c0e-ebd04c11c355" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_InternationalSegmentMember_019f4207-0352-74ad-853c-1684819b65f6" xlink:href="bby-20260801.xsd#bby_InternationalSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-0352-7bdc-bca6-c847b9b84117" xlink:to="loc_bby_InternationalSegmentMember_019f4207-0352-74ad-853c-1684819b65f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_RestructuringChargesIncludingInventoryWriteDown_019f4207-0352-7325-9e8b-3822c8b8f884" xlink:href="bby-20260801.xsd#bby_RestructuringChargesIncludingInventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-76cd-b3a6-f86e62191e35" xlink:to="loc_bby_RestructuringChargesIncludingInventoryWriteDown_019f4207-0352-7325-9e8b-3822c8b8f884" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_RestructuringChargesCumulativeAmount_019f4207-0352-7a24-8feb-69454c5ae0f6" xlink:href="bby-20260801.xsd#bby_RestructuringChargesCumulativeAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-76cd-b3a6-f86e62191e35" xlink:to="loc_bby_RestructuringChargesCumulativeAmount_019f4207-0352-7a24-8feb-69454c5ae0f6" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/RestructuringScheduleofRestructuringAccrualActivityDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#RestructuringScheduleofRestructuringAccrualActivityDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/RestructuringScheduleofRestructuringAccrualActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-7e1f-b42f-f0a662d47b06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7370-bb4f-30b4106105b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-7e1f-b42f-f0a662d47b06" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7370-bb4f-30b4106105b1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7c6e-8237-74f5ece1cde9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7370-bb4f-30b4106105b1" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7c6e-8237-74f5ece1cde9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-0352-7c6e-8237-74f5ece1cde9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7c6e-8237-74f5ece1cde9" xlink:to="loc_us-gaap_SegmentDomain_019f4207-0352-7c6e-8237-74f5ece1cde9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-0352-706d-842e-146f14a40649" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7c6e-8237-74f5ece1cde9" xlink:to="loc_us-gaap_SegmentDomain_019f4207-0352-706d-842e-146f14a40649" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DomesticSegmentMember_019f4207-0352-73cd-b01f-1dd0a5e11ff9" xlink:href="bby-20260801.xsd#bby_DomesticSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-0352-706d-842e-146f14a40649" xlink:to="loc_bby_DomesticSegmentMember_019f4207-0352-73cd-b01f-1dd0a5e11ff9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_InternationalSegmentMember_019f4207-0352-7ab6-a52c-408bf0025b7e" xlink:href="bby-20260801.xsd#bby_InternationalSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-0352-706d-842e-146f14a40649" xlink:to="loc_bby_InternationalSegmentMember_019f4207-0352-7ab6-a52c-408bf0025b7e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7701-9d13-fa72c01bb65a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7370-bb4f-30b4106105b1" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7701-9d13-fa72c01bb65a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7701-9d13-fa72c01bb65a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7701-9d13-fa72c01bb65a" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7701-9d13-fa72c01bb65a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7967-b901-41b07eb69b12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7701-9d13-fa72c01bb65a" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7967-b901-41b07eb69b12" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-73b1-8ef5-a5524044bd42" xlink:href="bby-20260801.xsd#bby_Fiscal2026LaborStoreOptimizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7967-b901-41b07eb69b12" xlink:to="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-73b1-8ef5-a5524044bd42" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember_019f4207-0352-7624-b600-7bf63691b129" xlink:href="bby-20260801.xsd#bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7967-b901-41b07eb69b12" xlink:to="loc_bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember_019f4207-0352-7624-b600-7bf63691b129" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7c5b-a3f5-50b9de64b6ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7370-bb4f-30b4106105b1" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7c5b-a3f5-50b9de64b6ac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7c5b-a3f5-50b9de64b6ac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7c5b-a3f5-50b9de64b6ac" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-7c5b-a3f5-50b9de64b6ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-75e7-85bb-392440377f1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f4207-0352-7c5b-a3f5-50b9de64b6ac" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-75e7-85bb-392440377f1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_019f4207-0352-7a18-a957-454c0f530d51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f4207-0352-75e7-85bb-392440377f1a" xlink:to="loc_us-gaap_EmployeeSeveranceMember_019f4207-0352-7a18-a957-454c0f530d51" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_019f4207-0352-770b-bcb0-654af1eac1d8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-7e1f-b42f-f0a662d47b06" xlink:to="loc_us-gaap_RestructuringReserveRollForward_019f4207-0352-770b-bcb0-654af1eac1d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_019f4207-0352-741b-b090-9e8510c806e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_019f4207-0352-770b-bcb0-654af1eac1d8" xlink:to="loc_us-gaap_RestructuringReserve_019f4207-0352-741b-b090-9e8510c806e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_019f4207-0352-7d8f-a564-b6f609b6ac8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_019f4207-0352-770b-bcb0-654af1eac1d8" xlink:to="loc_us-gaap_PaymentsForRestructuring_019f4207-0352-7d8f-a564-b6f609b6ac8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment1_019f4207-0352-7919-aa09-9fb6ae3d597b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveAccrualAdjustment1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_019f4207-0352-770b-bcb0-654af1eac1d8" xlink:to="loc_us-gaap_RestructuringReserveAccrualAdjustment1_019f4207-0352-7919-aa09-9fb6ae3d597b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_019f4207-0352-7532-b011-cddc0f3347ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/RestructuringNarrativeDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#RestructuringNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/RestructuringNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-7915-bd6e-130c688689d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7293-958f-dc5f4d1fd1a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-7915-bd6e-130c688689d9" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7293-958f-dc5f4d1fd1a6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7aa6-b2fe-edc33decb76c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f4207-0352-7293-958f-dc5f4d1fd1a6" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7aa6-b2fe-edc33decb76c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7aa6-b2fe-edc33decb76c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7aa6-b2fe-edc33decb76c" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7aa6-b2fe-edc33decb76c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7f04-ac7d-ccbbc82b4fc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f4207-0352-7aa6-b2fe-edc33decb76c" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7f04-ac7d-ccbbc82b4fc5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-7bd6-9b07-d4a318c4548e" xlink:href="bby-20260801.xsd#bby_Fiscal2026LaborStoreOptimizationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7f04-ac7d-ccbbc82b4fc5" xlink:to="loc_bby_Fiscal2026LaborStoreOptimizationMember_019f4207-0352-7bd6-9b07-d4a318c4548e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember_019f4207-0352-7042-847d-90022a607ee0" xlink:href="bby-20260801.xsd#bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f4207-0352-7f04-ac7d-ccbbc82b4fc5" xlink:to="loc_bby_TwoThousandTwentyFourResourceOptimizationInitiativeMember_019f4207-0352-7042-847d-90022a607ee0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_019f4207-0352-7e75-a4cc-c074fc5220d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f4207-0352-7915-bd6e-130c688689d9" xlink:to="loc_us-gaap_RestructuringReserve_019f4207-0352-7e75-a4cc-c074fc5220d7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/GoodwillDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#GoodwillDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/GoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_019f4207-0352-7755-840a-de5617f5c53c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_019f4207-0352-786d-9ab1-b474f748b0b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_019f4207-0352-7755-840a-de5617f5c53c" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_019f4207-0352-786d-9ab1-b474f748b0b9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7243-ac46-adb5e570cdc6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_019f4207-0352-786d-9ab1-b474f748b0b9" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7243-ac46-adb5e570cdc6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-0352-7243-ac46-adb5e570cdc6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7243-ac46-adb5e570cdc6" xlink:to="loc_us-gaap_SegmentDomain_019f4207-0352-7243-ac46-adb5e570cdc6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-0352-7ebc-a5f2-590fbc1789dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-0352-7243-ac46-adb5e570cdc6" xlink:to="loc_us-gaap_SegmentDomain_019f4207-0352-7ebc-a5f2-590fbc1789dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DomesticSegmentMember_019f4207-0352-770c-9e3f-c617590028ce" xlink:href="bby-20260801.xsd#bby_DomesticSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-0352-7ebc-a5f2-590fbc1789dc" xlink:to="loc_bby_DomesticSegmentMember_019f4207-0352-770c-9e3f-c617590028ce" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_InternationalSegmentMember_019f4207-0352-7e6f-9ca3-0dce4774adee" xlink:href="bby-20260801.xsd#bby_InternationalSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-0352-7ebc-a5f2-590fbc1789dc" xlink:to="loc_bby_InternationalSegmentMember_019f4207-0352-7e6f-9ca3-0dce4774adee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_019f4207-0352-7047-9640-cd95efac8932" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f4207-0352-7755-840a-de5617f5c53c" xlink:to="loc_us-gaap_GoodwillGross_019f4207-0352-7047-9640-cd95efac8932" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_019f4207-0352-7245-a5f1-7d1343e59692" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f4207-0352-7755-840a-de5617f5c53c" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_019f4207-0352-7245-a5f1-7d1343e59692" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_019f4207-0352-79bf-bf8e-d95babf80147" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f4207-0352-7755-840a-de5617f5c53c" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_019f4207-0352-79bf-bf8e-d95babf80147" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/FairValueMeasurementsScheduleofFinancialAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#FairValueMeasurementsScheduleofFinancialAssetsandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/FairValueMeasurementsScheduleofFinancialAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f4207-0352-749c-a3c1-7e4fa165fcf5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7872-b211-189cbf38d584" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f4207-0352-749c-a3c1-7e4fa165fcf5" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7872-b211-189cbf38d584" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f4207-0352-7929-b771-d75b67ecae20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7872-b211-189cbf38d584" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f4207-0352-7929-b771-d75b67ecae20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f4207-0352-7929-b771-d75b67ecae20_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f4207-0352-7929-b771-d75b67ecae20" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f4207-0352-7929-b771-d75b67ecae20_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f4207-0352-7768-8391-c5448584a515" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_019f4207-0352-7929-b771-d75b67ecae20" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f4207-0352-7768-8391-c5448584a515" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_019f4207-0352-7a7b-8ead-ca59f60e2124" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_019f4207-0352-7768-8391-c5448584a515" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_019f4207-0352-7a7b-8ead-ca59f60e2124" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-73ab-a4f1-aad08ce8a4a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7872-b211-189cbf38d584" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-73ab-a4f1-aad08ce8a4a3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-73ab-a4f1-aad08ce8a4a3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-73ab-a4f1-aad08ce8a4a3" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-73ab-a4f1-aad08ce8a4a3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-77c3-affe-98d9a1927824" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-73ab-a4f1-aad08ce8a4a3" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-77c3-affe-98d9a1927824" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019f4207-0352-7c3c-88ab-70778ae06ee2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-77c3-affe-98d9a1927824" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019f4207-0352-7c3c-88ab-70778ae06ee2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019f4207-0352-79d2-ba78-b8408cc8c29e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-77c3-affe-98d9a1927824" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019f4207-0352-79d2-ba78-b8408cc8c29e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_019f4207-0352-74b5-bfd0-829498fa7bd9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7872-b211-189cbf38d584" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_019f4207-0352-74b5-bfd0-829498fa7bd9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f4207-0352-74b5-bfd0-829498fa7bd9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_019f4207-0352-74b5-bfd0-829498fa7bd9" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f4207-0352-74b5-bfd0-829498fa7bd9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f4207-0352-7d65-81e9-ebd1bdf1a330" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_019f4207-0352-74b5-bfd0-829498fa7bd9" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f4207-0352-7d65-81e9-ebd1bdf1a330" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_019f4207-0352-7954-bb54-2bb114e9de7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f4207-0352-7d65-81e9-ebd1bdf1a330" xlink:to="loc_us-gaap_MoneyMarketFundsMember_019f4207-0352-7954-bb54-2bb114e9de7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankTimeDepositsMember_019f4207-0352-7a49-99ac-72e5c75eeac8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BankTimeDepositsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f4207-0352-7d65-81e9-ebd1bdf1a330" xlink:to="loc_us-gaap_BankTimeDepositsMember_019f4207-0352-7a49-99ac-72e5c75eeac8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_019f4207-0352-767b-8ba6-c2faee1bfe51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f4207-0352-7d65-81e9-ebd1bdf1a330" xlink:to="loc_us-gaap_CommercialPaperMember_019f4207-0352-767b-8ba6-c2faee1bfe51" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-78b4-859d-0c047ed1fbe3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7872-b211-189cbf38d584" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-78b4-859d-0c047ed1fbe3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-78b4-859d-0c047ed1fbe3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-78b4-859d-0c047ed1fbe3" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-78b4-859d-0c047ed1fbe3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7a5a-a862-e134e100f60e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-78b4-859d-0c047ed1fbe3" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7a5a-a862-e134e100f60e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_019f4207-0352-787f-9fac-2a75c0d7e481" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7a5a-a862-e134e100f60e" xlink:to="loc_us-gaap_MoneyMarketFundsMember_019f4207-0352-787f-9fac-2a75c0d7e481" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankTimeDepositsMember_019f4207-0352-7cae-8bb4-9a10d7eec65b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BankTimeDepositsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7a5a-a862-e134e100f60e" xlink:to="loc_us-gaap_BankTimeDepositsMember_019f4207-0352-7cae-8bb4-9a10d7eec65b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_MarketableSecuritiesThatFundDeferredCompensationMember_019f4207-0352-7dc4-b373-a72337d5b078" xlink:href="bby-20260801.xsd#bby_MarketableSecuritiesThatFundDeferredCompensationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7a5a-a862-e134e100f60e" xlink:to="loc_bby_MarketableSecuritiesThatFundDeferredCompensationMember_019f4207-0352-7dc4-b373-a72337d5b078" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-75d3-9c69-3959ff78ab94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7872-b211-189cbf38d584" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-75d3-9c69-3959ff78ab94" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-75d3-9c69-3959ff78ab94_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-75d3-9c69-3959ff78ab94" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-75d3-9c69-3959ff78ab94_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7939-bc0d-408b08f086b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-75d3-9c69-3959ff78ab94" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7939-bc0d-408b08f086b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f4207-0352-7019-b43e-098f99fdd70b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7939-bc0d-408b08f086b5" xlink:to="loc_us-gaap_InterestRateSwapMember_019f4207-0352-7019-b43e-098f99fdd70b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_019f4207-0352-7253-a7e8-8e3e6a4a4268" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f4207-0352-749c-a3c1-7e4fa165fcf5" xlink:to="loc_us-gaap_AssetsAbstract_019f4207-0352-7253-a7e8-8e3e6a4a4268" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019f4207-0352-70c6-a3c1-2234bcc08c39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-7253-a7e8-8e3e6a4a4268" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019f4207-0352-70c6-a3c1-2234bcc08c39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019f4207-0352-7e05-8d55-8a67d9c45fb3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_019f4207-0352-7253-a7e8-8e3e6a4a4268" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_019f4207-0352-7e05-8d55-8a67d9c45fb3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract_019f4207-0352-79a5-bcf3-919847febf34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f4207-0352-749c-a3c1-7e4fa165fcf5" xlink:to="loc_us-gaap_LiabilitiesAbstract_019f4207-0352-79a5-bcf3-919847febf34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019f4207-0352-7120-ab5c-896d9a4a8104" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract_019f4207-0352-79a5-bcf3-919847febf34" xlink:to="loc_us-gaap_DerivativeLiabilities_019f4207-0352-7120-ab5c-896d9a4a8104" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/FairValueMeasurementsScheduleofFairValueofFinancialInstrumentsDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#FairValueMeasurementsScheduleofFairValueofFinancialInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/FairValueMeasurementsScheduleofFairValueofFinancialInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f4207-0352-7c97-a2bc-26bc8666969b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7864-bcbe-9b3a7afa83b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f4207-0352-7c97-a2bc-26bc8666969b" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7864-bcbe-9b3a7afa83b4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-7970-a5a2-51daf9a248d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7864-bcbe-9b3a7afa83b4" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-7970-a5a2-51daf9a248d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-7970-a5a2-51daf9a248d4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-7970-a5a2-51daf9a248d4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-7970-a5a2-51daf9a248d4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-70ea-9775-30a9b2e60e43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f4207-0352-7970-a5a2-51daf9a248d4" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-70ea-9775-30a9b2e60e43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019f4207-0352-73e5-be1c-285ee7a0e4fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f4207-0352-70ea-9775-30a9b2e60e43" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019f4207-0352-73e5-be1c-285ee7a0e4fc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-7d3b-841c-d134aa6a12d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7864-bcbe-9b3a7afa83b4" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-7d3b-841c-d134aa6a12d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7d3b-841c-d134aa6a12d9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-7d3b-841c-d134aa6a12d9" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7d3b-841c-d134aa6a12d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7ce2-adda-40eaaeafcf55" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f4207-0352-7d3b-841c-d134aa6a12d9" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7ce2-adda-40eaaeafcf55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMember_019f4207-0352-7cee-a546-e1e14c53a2db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f4207-0352-7ce2-adda-40eaaeafcf55" xlink:to="loc_us-gaap_LongTermDebtMember_019f4207-0352-7cee-a546-e1e14c53a2db" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019f4207-0352-775a-9e6a-5cec08c6daff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_019f4207-0352-7864-bcbe-9b3a7afa83b4" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019f4207-0352-775a-9e6a-5cec08c6daff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f4207-0352-775a-9e6a-5cec08c6daff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019f4207-0352-775a-9e6a-5cec08c6daff" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f4207-0352-775a-9e6a-5cec08c6daff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f4207-0352-77ca-8011-f9fa7087b57f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019f4207-0352-775a-9e6a-5cec08c6daff" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f4207-0352-77ca-8011-f9fa7087b57f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f4207-0352-7b7c-b2b0-fe49d8278e21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f4207-0352-77ca-8011-f9fa7087b57f" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f4207-0352-7b7c-b2b0-fe49d8278e21" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f4207-0352-7c0e-b10c-d2cfd0709f8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f4207-0352-7b7c-b2b0-fe49d8278e21" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_019f4207-0352-7c0e-b10c-d2cfd0709f8e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f4207-0352-7d47-9c33-271862ca6814" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f4207-0352-7b7c-b2b0-fe49d8278e21" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f4207-0352-7d47-9c33-271862ca6814" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_019f4207-0352-743c-a3fd-71d26a159391" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_019f4207-0352-7c97-a2bc-26bc8666969b" xlink:to="loc_us-gaap_DebtInstrumentFairValue_019f4207-0352-743c-a3fd-71d26a159391" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/DerivativeInstrumentsScheduleofNotionalAmountofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#DerivativeInstrumentsScheduleofNotionalAmountofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/DerivativeInstrumentsScheduleofNotionalAmountofDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019f4207-0352-7718-a098-17ea3cbc8805" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-7d80-8601-c0fb90ac0abc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f4207-0352-7718-a098-17ea3cbc8805" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-7d80-8601-c0fb90ac0abc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-785a-b9d0-17fe9d328e9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-7d80-8601-c0fb90ac0abc" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-785a-b9d0-17fe9d328e9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-785a-b9d0-17fe9d328e9d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-785a-b9d0-17fe9d328e9d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-785a-b9d0-17fe9d328e9d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7929-a9bc-37c843b34c15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-785a-b9d0-17fe9d328e9d" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7929-a9bc-37c843b34c15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_019f4207-0352-78e2-a53b-6024026f2b50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7929-a9bc-37c843b34c15" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_019f4207-0352-78e2-a53b-6024026f2b50" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f4207-0352-76ac-8b79-4c2d5e17684f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7929-a9bc-37c843b34c15" xlink:to="loc_us-gaap_InterestRateSwapMember_019f4207-0352-76ac-8b79-4c2d5e17684f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_019f4207-0352-7a7d-a67a-533e8e7ef0fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7929-a9bc-37c843b34c15" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_019f4207-0352-7a7d-a67a-533e8e7ef0fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7ef3-adf1-a2072e144f28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-7d80-8601-c0fb90ac0abc" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7ef3-adf1-a2072e144f28" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-7ef3-adf1-a2072e144f28_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7ef3-adf1-a2072e144f28" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-7ef3-adf1-a2072e144f28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-74a4-829c-26020c8da4fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7ef3-adf1-a2072e144f28" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-74a4-829c-26020c8da4fa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f4207-0352-71ce-83bd-99010dc6d2aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-74a4-829c-26020c8da4fa" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f4207-0352-71ce-83bd-99010dc6d2aa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019f4207-0352-74ef-86b7-da20faa9b8a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-74a4-829c-26020c8da4fa" xlink:to="loc_us-gaap_NondesignatedMember_019f4207-0352-74ef-86b7-da20faa9b8a6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_019f4207-0352-75c5-8547-c87ebab37b96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f4207-0352-7718-a098-17ea3cbc8805" xlink:to="loc_us-gaap_DerivativeNotionalAmount_019f4207-0352-75c5-8547-c87ebab37b96" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/DerivativeInstrumentsScheduleofEffectsofDerivativeInstrumentsonConsolidatedStatementsofEarningsDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#DerivativeInstrumentsScheduleofEffectsofDerivativeInstrumentsonConsolidatedStatementsofEarningsDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/DerivativeInstrumentsScheduleofEffectsofDerivativeInstrumentsonConsolidatedStatementsofEarningsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019f4207-0352-72a6-b04c-49337ddc5263" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-748b-82b6-13bd350dd27e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f4207-0352-72a6-b04c-49337ddc5263" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-748b-82b6-13bd350dd27e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7289-bad7-e42f82b8a387" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-748b-82b6-13bd350dd27e" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7289-bad7-e42f82b8a387" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-7289-bad7-e42f82b8a387_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7289-bad7-e42f82b8a387" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-7289-bad7-e42f82b8a387_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-7380-95a3-45423fa98e2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f4207-0352-7289-bad7-e42f82b8a387" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-7380-95a3-45423fa98e2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f4207-0352-7b99-ac66-c4e15785d350" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f4207-0352-7380-95a3-45423fa98e2b" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f4207-0352-7b99-ac66-c4e15785d350" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-736b-a613-57b01f8a8bcd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f4207-0352-748b-82b6-13bd350dd27e" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-736b-a613-57b01f8a8bcd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-736b-a613-57b01f8a8bcd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-736b-a613-57b01f8a8bcd" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-736b-a613-57b01f8a8bcd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7da3-8997-8b5ac2265c8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f4207-0352-736b-a613-57b01f8a8bcd" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7da3-8997-8b5ac2265c8a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_019f4207-0352-729f-a84e-05ed933d314f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7da3-8997-8b5ac2265c8a" xlink:to="loc_us-gaap_InterestRateSwapMember_019f4207-0352-729f-a84e-05ed933d314f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_CarryingValueOfLongTermDebtMember_019f4207-0352-75e1-a077-1864cce36760" xlink:href="bby-20260801.xsd#bby_CarryingValueOfLongTermDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f4207-0352-7da3-8997-8b5ac2265c8a" xlink:to="loc_bby_CarryingValueOfLongTermDebtMember_019f4207-0352-75e1-a077-1864cce36760" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019f4207-0352-7720-8dd2-5f17ec101604" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f4207-0352-72a6-b04c-49337ddc5263" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019f4207-0352-7720-8dd2-5f17ec101604" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/DebtNarrativeDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#DebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/DebtNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_019f4207-0352-737e-a7a8-c3afdbd3cafa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_019f4207-0352-7aaf-a85b-67ba33bad6ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019f4207-0352-737e-a7a8-c3afdbd3cafa" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_019f4207-0352-7aaf-a85b-67ba33bad6ae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7a36-812c-677f13461cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019f4207-0352-7aaf-a85b-67ba33bad6ae" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7a36-812c-677f13461cb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-7a36-812c-677f13461cb4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7a36-812c-677f13461cb4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-7a36-812c-677f13461cb4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-79e6-88d2-09fea0299edb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7a36-812c-677f13461cb4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-79e6-88d2-09fea0299edb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_FiveYearFacilityAgreementMember_019f4207-0352-79bb-8afa-0c4c1d9cfe86" xlink:href="bby-20260801.xsd#bby_FiveYearFacilityAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-79e6-88d2-09fea0299edb" xlink:to="loc_bby_FiveYearFacilityAgreementMember_019f4207-0352-79bb-8afa-0c4c1d9cfe86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_019f4207-0352-7fd5-bff6-b6aedc1924d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_019f4207-0352-7aaf-a85b-67ba33bad6ae" xlink:to="loc_us-gaap_CreditFacilityAxis_019f4207-0352-7fd5-bff6-b6aedc1924d7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f4207-0352-7fd5-bff6-b6aedc1924d7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_019f4207-0352-7fd5-bff6-b6aedc1924d7" xlink:to="loc_us-gaap_CreditFacilityDomain_019f4207-0352-7fd5-bff6-b6aedc1924d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_019f4207-0352-7fa3-ad99-8f736c59c7bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_019f4207-0352-7fd5-bff6-b6aedc1924d7" xlink:to="loc_us-gaap_CreditFacilityDomain_019f4207-0352-7fa3-ad99-8f736c59c7bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_019f4207-0352-755c-9849-f6c9f720133c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_019f4207-0352-7fa3-ad99-8f736c59c7bb" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_019f4207-0352-755c-9849-f6c9f720133c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019f4207-0352-702c-9c1b-7dbebb3f6061" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019f4207-0352-737e-a7a8-c3afdbd3cafa" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_019f4207-0352-702c-9c1b-7dbebb3f6061" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_019f4207-0352-72cc-9887-e9a8ad962f25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019f4207-0352-737e-a7a8-c3afdbd3cafa" xlink:to="loc_us-gaap_DebtInstrumentTerm_019f4207-0352-72cc-9887-e9a8ad962f25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_019f4207-0352-7f7c-8a08-0353d98b928a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_019f4207-0352-737e-a7a8-c3afdbd3cafa" xlink:to="loc_us-gaap_LineOfCredit_019f4207-0352-7f7c-8a08-0353d98b928a" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/DebtScheduleofLongTermDebtDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#DebtScheduleofLongTermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/DebtScheduleofLongTermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019f4207-0352-797a-9914-23df58447bac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_DebtInstrumentTable_019f4207-0352-797a-9914-23df58447bac" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7eab-a167-d075f33c7244" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019f4207-0352-797a-9914-23df58447bac" xlink:to="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7eab-a167-d075f33c7244" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-7eab-a167-d075f33c7244_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7eab-a167-d075f33c7244" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-7eab-a167-d075f33c7244_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-78ed-8ea5-374b130c00d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019f4207-0352-7eab-a167-d075f33c7244" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-78ed-8ea5-374b130c00d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_NotesDue2028Member_019f4207-0352-70ad-b7ff-85c3b5f918e9" xlink:href="bby-20260801.xsd#bby_NotesDue2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-78ed-8ea5-374b130c00d2" xlink:to="loc_bby_NotesDue2028Member_019f4207-0352-70ad-b7ff-85c3b5f918e9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_NotesDue2030Member_019f4207-0352-7367-80ef-79d7660d38e5" xlink:href="bby-20260801.xsd#bby_NotesDue2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019f4207-0352-78ed-8ea5-374b130c00d2" xlink:to="loc_bby_NotesDue2030Member_019f4207-0352-7367-80ef-79d7660d38e5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019f4207-0352-7778-a468-58fe932d3fd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019f4207-0352-7778-a468-58fe932d3fd3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DerivativeLiabilityValuationAdjustment_019f4207-0352-77df-a5db-edd51a0fd926" xlink:href="bby-20260801.xsd#bby_DerivativeLiabilityValuationAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_bby_DerivativeLiabilityValuationAdjustment_019f4207-0352-77df-a5db-edd51a0fd926" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_LongTermDebtExcludingDebtDiscountsAndIssuanceCostsAndFinancingAndCapitalLeaseObligations_019f4207-0352-70ba-af5e-d3b2faffd996" xlink:href="bby-20260801.xsd#bby_LongTermDebtExcludingDebtDiscountsAndIssuanceCostsAndFinancingAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_bby_LongTermDebtExcludingDebtDiscountsAndIssuanceCostsAndFinancingAndCapitalLeaseObligations_019f4207-0352-70ba-af5e-d3b2faffd996" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019f4207-0352-7270-a47b-ff94224675f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_019f4207-0352-7270-a47b-ff94224675f3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_019f4207-0352-732a-b5de-16c69cafa933" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_FinanceLeaseLiability_019f4207-0352-732a-b5de-16c69cafa933" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_019f4207-0352-7c3b-ac20-798f45f261b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_DebtAndCapitalLeaseObligations_019f4207-0352-7c3b-ac20-798f45f261b1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019f4207-0352-79eb-a18f-1eac39506bf8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_019f4207-0352-79eb-a18f-1eac39506bf8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f4207-0352-7e0f-8e57-9d5ed5a38f64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019f4207-0352-7e0f-8e57-9d5ed5a38f64" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f4207-0352-70da-bede-435be21a82cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019f4207-0352-746a-a44d-52890ab9ed45" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019f4207-0352-70da-bede-435be21a82cf" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/RevenueScheduleofContractBalancesandChangesinContractBalancesDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#RevenueScheduleofContractBalancesandChangesinContractBalancesDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/RevenueScheduleofContractBalancesandChangesinContractBalancesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_bby_RevenueFromContractWithCustomerLineItems_019f4207-0352-74f4-8784-179d9299f3c7" xlink:href="bby-20260801.xsd#bby_RevenueFromContractWithCustomerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_RevenueFromContractWithCustomerTable_019f4207-0352-7def-bf38-d322162070ee" xlink:href="bby-20260801.xsd#bby_RevenueFromContractWithCustomerTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_bby_RevenueFromContractWithCustomerLineItems_019f4207-0352-74f4-8784-179d9299f3c7" xlink:to="loc_bby_RevenueFromContractWithCustomerTable_019f4207-0352-7def-bf38-d322162070ee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f4207-0352-7944-912d-68a1c65053c0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_bby_RevenueFromContractWithCustomerTable_019f4207-0352-7def-bf38-d322162070ee" xlink:to="loc_srt_ProductOrServiceAxis_019f4207-0352-7944-912d-68a1c65053c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f4207-0352-7944-912d-68a1c65053c0_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019f4207-0352-7944-912d-68a1c65053c0" xlink:to="loc_srt_ProductsAndServicesDomain_019f4207-0352-7944-912d-68a1c65053c0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f4207-0352-7e81-96b5-a3b18658ec5a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019f4207-0352-7944-912d-68a1c65053c0" xlink:to="loc_srt_ProductsAndServicesDomain_019f4207-0352-7e81-96b5-a3b18658ec5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_UnredeemedGiftCardsMember_019f4207-0352-7600-baf5-7ded949bf72d" xlink:href="bby-20260801.xsd#bby_UnredeemedGiftCardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-0352-7e81-96b5-a3b18658ec5a" xlink:to="loc_bby_UnredeemedGiftCardsMember_019f4207-0352-7600-baf5-7ded949bf72d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DeferredRevenueMember_019f4207-0352-7074-95d3-6708cf043f46" xlink:href="bby-20260801.xsd#bby_DeferredRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-0352-7e81-96b5-a3b18658ec5a" xlink:to="loc_bby_DeferredRevenueMember_019f4207-0352-7074-95d3-6708cf043f46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_AccruedLiabilityMember_019f4207-0352-727e-ad6e-2fc1b6081084" xlink:href="bby-20260801.xsd#bby_AccruedLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-0352-7e81-96b5-a3b18658ec5a" xlink:to="loc_bby_AccruedLiabilityMember_019f4207-0352-727e-ad6e-2fc1b6081084" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNet_019f4207-0352-7b14-bf81-a4d7d627932b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bby_RevenueFromContractWithCustomerLineItems_019f4207-0352-74f4-8784-179d9299f3c7" xlink:to="loc_us-gaap_ContractWithCustomerAssetNet_019f4207-0352-7b14-bf81-a4d7d627932b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019f4207-0352-707c-8960-a0c70deabd4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bby_RevenueFromContractWithCustomerLineItems_019f4207-0352-74f4-8784-179d9299f3c7" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019f4207-0352-707c-8960-a0c70deabd4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019f4207-0352-7bd2-80d2-96c2379e1948" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bby_RevenueFromContractWithCustomerLineItems_019f4207-0352-74f4-8784-179d9299f3c7" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_019f4207-0352-7bd2-80d2-96c2379e1948" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss_019f4207-0352-7031-b52f-bb4d0c9e93f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_bby_RevenueFromContractWithCustomerLineItems_019f4207-0352-74f4-8784-179d9299f3c7" xlink:to="loc_us-gaap_ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss_019f4207-0352-7031-b52f-bb4d0c9e93f6" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/RevenueScheduleofExpectedTimingforSatisfyingRemainingPerformanceObligationDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#RevenueScheduleofExpectedTimingforSatisfyingRemainingPerformanceObligationDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/RevenueScheduleofExpectedTimingforSatisfyingRemainingPerformanceObligationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019f4207-0352-71e9-994d-92a1a68fba0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019f4207-0352-71e9-994d-92a1a68fba0e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_019f4207-0352-707c-9d38-0351b563a4f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019f4207-0352-71e9-994d-92a1a68fba0e" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_019f4207-0352-707c-9d38-0351b563a4f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_019f4207-03fd-74ef-ab07-1fc30501cb59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_019f4207-03fd-74ef-ab07-1fc30501cb59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019f4207-03fd-7383-921c-dbef61628aea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019f4207-03fd-7383-921c-dbef61628aea" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/RevenueScheduleofExpectedTimingforSatisfyingRemainingPerformanceObligationDetails_1" xlink:type="simple" xlink:href="bby-20260801.xsd#RevenueScheduleofExpectedTimingforSatisfyingRemainingPerformanceObligationDetails_1"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/RevenueScheduleofExpectedTimingforSatisfyingRemainingPerformanceObligationDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019f4207-0352-71e9-994d-92a1a68fba0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTable_019f4207-0352-71e9-994d-92a1a68fba0e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_019f4207-03fd-74ef-ab07-1fc30501cb59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_019f4207-03fd-74ef-ab07-1fc30501cb59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019f4207-03fd-7383-921c-dbef61628aea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionLineItems_019f4207-0352-7715-9919-68c51918dc81" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_019f4207-03fd-7383-921c-dbef61628aea" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/SegmentsScheduleofRevenuebyReportableSegmentandProductCategoryDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#SegmentsScheduleofRevenuebyReportableSegmentandProductCategoryDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/SegmentsScheduleofRevenuebyReportableSegmentandProductCategoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7561-a043-327282c37c73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-75c5-8ecc-58d9528cff50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7561-a043-327282c37c73" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-75c5-8ecc-58d9528cff50" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-783d-ad1f-a730becfba5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-75c5-8ecc-58d9528cff50" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-783d-ad1f-a730becfba5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-03fd-783d-ad1f-a730becfba5d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-783d-ad1f-a730becfba5d" xlink:to="loc_us-gaap_SegmentDomain_019f4207-03fd-783d-ad1f-a730becfba5d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-03fd-79ed-ae0b-4b1c74295e6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-783d-ad1f-a730becfba5d" xlink:to="loc_us-gaap_SegmentDomain_019f4207-03fd-79ed-ae0b-4b1c74295e6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DomesticSegmentMember_019f4207-03fd-77dc-9d58-d321e9cc8396" xlink:href="bby-20260801.xsd#bby_DomesticSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-03fd-79ed-ae0b-4b1c74295e6a" xlink:to="loc_bby_DomesticSegmentMember_019f4207-03fd-77dc-9d58-d321e9cc8396" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_InternationalSegmentMember_019f4207-03fd-7a4e-a9da-4172a96d9a63" xlink:href="bby-20260801.xsd#bby_InternationalSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-03fd-79ed-ae0b-4b1c74295e6a" xlink:to="loc_bby_InternationalSegmentMember_019f4207-03fd-7a4e-a9da-4172a96d9a63" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f4207-03fd-7883-83f8-9f6b209e6909" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-75c5-8ecc-58d9528cff50" xlink:to="loc_srt_ProductOrServiceAxis_019f4207-03fd-7883-83f8-9f6b209e6909" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7883-83f8-9f6b209e6909_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019f4207-03fd-7883-83f8-9f6b209e6909" xlink:to="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7883-83f8-9f6b209e6909_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019f4207-03fd-7883-83f8-9f6b209e6909" xlink:to="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_ComputingAndMobilePhonesMember_019f4207-03fd-7769-bd6d-57e3cd32e43b" xlink:href="bby-20260801.xsd#bby_ComputingAndMobilePhonesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:to="loc_bby_ComputingAndMobilePhonesMember_019f4207-03fd-7769-bd6d-57e3cd32e43b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_ConsumerElectronicsMember_019f4207-03fd-7a49-9959-ac05c3e08058" xlink:href="bby-20260801.xsd#bby_ConsumerElectronicsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:to="loc_bby_ConsumerElectronicsMember_019f4207-03fd-7a49-9959-ac05c3e08058" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_AppliancesMember_019f4207-03fd-7465-8853-2bcfcbe7a9ea" xlink:href="bby-20260801.xsd#bby_AppliancesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:to="loc_bby_AppliancesMember_019f4207-03fd-7465-8853-2bcfcbe7a9ea" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_ServicesMember_019f4207-03fd-76c0-aa01-99adb4eac94d" xlink:href="bby-20260801.xsd#bby_ServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:to="loc_bby_ServicesMember_019f4207-03fd-76c0-aa01-99adb4eac94d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntertainmentMember_019f4207-03fd-773a-81c6-fdf433db1cfa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EntertainmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:to="loc_us-gaap_EntertainmentMember_019f4207-03fd-773a-81c6-fdf433db1cfa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_OtherSegmentMember_019f4207-03fd-7a82-b693-c75677b45492" xlink:href="bby-20260801.xsd#bby_OtherSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f4207-03fd-7d2a-b446-9862a2dfdd9a" xlink:to="loc_bby_OtherSegmentMember_019f4207-03fd-7a82-b693-c75677b45492" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019f4207-03fd-7902-b98c-be62f0839e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7561-a043-327282c37c73" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019f4207-03fd-7902-b98c-be62f0839e7b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/SegmentsScheduleofOperatingIncomebyReportableSegmentandReconciliationtoEarningsBeforeIncomeTaxExpenseDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#SegmentsScheduleofOperatingIncomebyReportableSegmentandReconciliationtoEarningsBeforeIncomeTaxExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/SegmentsScheduleofOperatingIncomebyReportableSegmentandReconciliationtoEarningsBeforeIncomeTaxExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-7841-a6d0-a2a1370a5167" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-7841-a6d0-a2a1370a5167" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7ba1-abbd-503481254a32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-7841-a6d0-a2a1370a5167" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7ba1-abbd-503481254a32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-03fd-7ba1-abbd-503481254a32_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7ba1-abbd-503481254a32" xlink:to="loc_us-gaap_SegmentDomain_019f4207-03fd-7ba1-abbd-503481254a32_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-03fd-738f-96ba-83a93a4620a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7ba1-abbd-503481254a32" xlink:to="loc_us-gaap_SegmentDomain_019f4207-03fd-738f-96ba-83a93a4620a8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DomesticSegmentMember_019f4207-03fd-7141-8029-e0e42637e58b" xlink:href="bby-20260801.xsd#bby_DomesticSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-03fd-738f-96ba-83a93a4620a8" xlink:to="loc_bby_DomesticSegmentMember_019f4207-03fd-7141-8029-e0e42637e58b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_InternationalSegmentMember_019f4207-03fd-7428-b3df-1a11a99602a3" xlink:href="bby-20260801.xsd#bby_InternationalSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-03fd-738f-96ba-83a93a4620a8" xlink:to="loc_bby_InternationalSegmentMember_019f4207-03fd-7428-b3df-1a11a99602a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019f4207-03fd-7edf-8d00-f13a89a872bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_019f4207-03fd-7edf-8d00-f13a89a872bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_019f4207-03fd-7ace-bb00-5ba26f89b4e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_019f4207-03fd-7ace-bb00-5ba26f89b4e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_AdjustedSellingGeneralAndAdministrativeExpense_019f4207-03fd-7263-9d68-f40f5d5dc3da" xlink:href="bby-20260801.xsd#bby_AdjustedSellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_bby_AdjustedSellingGeneralAndAdministrativeExpense_019f4207-03fd-7263-9d68-f40f5d5dc3da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_AdjustedOperatingIncomeLoss_019f4207-03fd-70bd-8466-b350293d125d" xlink:href="bby-20260801.xsd#bby_AdjustedOperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_bby_AdjustedOperatingIncomeLoss_019f4207-03fd-70bd-8466-b350293d125d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f4207-03fd-7801-bead-4a761a835acb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_RestructuringCharges_019f4207-03fd-7801-bead-4a761a835acb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019f4207-03fd-7bfd-aa8b-986bce1647a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019f4207-03fd-7bfd-aa8b-986bce1647a7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019f4207-03fd-797e-81f4-ba45b90dca74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_OperatingIncomeLoss_019f4207-03fd-797e-81f4-ba45b90dca74" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f4207-03fd-7500-a734-14c8956b5cc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f4207-03fd-7500-a734-14c8956b5cc5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_019fd73d-b00b-7cd6-92f7-3400443d15d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f4207-03fd-7500-a734-14c8956b5cc5" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_019fd73d-b00b-7cd6-92f7-3400443d15d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeNet_019f4207-03fd-7d2c-8925-d8606342029e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIncomeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f4207-03fd-7500-a734-14c8956b5cc5" xlink:to="loc_us-gaap_InvestmentIncomeNet_019f4207-03fd-7d2c-8925-d8606342029e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019f4207-03fd-7711-b7a0-23dddd5ad1d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019f4207-03fd-7500-a734-14c8956b5cc5" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019f4207-03fd-7711-b7a0-23dddd5ad1d9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_019f4207-03fd-73e3-a431-ff302e4170cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7bfb-9477-1487fac46c5e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_019f4207-03fd-73e3-a431-ff302e4170cb" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.bestbuy.com/role/SegmentsScheduleofOtherInformationbyReportableSegmentDetails" xlink:type="simple" xlink:href="bby-20260801.xsd#SegmentsScheduleofOtherInformationbyReportableSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.bestbuy.com/role/SegmentsScheduleofOtherInformationbyReportableSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7527-a0d0-6e7c67b31a81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-7fbf-ac2e-8ab9811372c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7527-a0d0-6e7c67b31a81" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-7fbf-ac2e-8ab9811372c2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7f1c-ab2f-abb9675e5c18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f4207-03fd-7fbf-ac2e-8ab9811372c2" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7f1c-ab2f-abb9675e5c18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-03fd-7f1c-ab2f-abb9675e5c18_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7f1c-ab2f-abb9675e5c18" xlink:to="loc_us-gaap_SegmentDomain_019f4207-03fd-7f1c-ab2f-abb9675e5c18_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f4207-03fd-70d4-a558-be665afc0215" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f4207-03fd-7f1c-ab2f-abb9675e5c18" xlink:to="loc_us-gaap_SegmentDomain_019f4207-03fd-70d4-a558-be665afc0215" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_DomesticSegmentMember_019f4207-03fd-7f94-b2bf-4365b818c9dd" xlink:href="bby-20260801.xsd#bby_DomesticSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-03fd-70d4-a558-be665afc0215" xlink:to="loc_bby_DomesticSegmentMember_019f4207-03fd-7f94-b2bf-4365b818c9dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_bby_InternationalSegmentMember_019f4207-03fd-72e7-9a30-fc9d8423c677" xlink:href="bby-20260801.xsd#bby_InternationalSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f4207-03fd-70d4-a558-be665afc0215" xlink:to="loc_bby_InternationalSegmentMember_019f4207-03fd-72e7-9a30-fc9d8423c677" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_019f4207-03fd-72b0-aaa9-98db1d24222c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentExpenditureAdditionToLongLivedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7527-a0d0-6e7c67b31a81" xlink:to="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_019f4207-03fd-72b0-aaa9-98db1d24222c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_019f4207-03fd-7166-81a8-ef72cca7d64a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7527-a0d0-6e7c67b31a81" xlink:to="loc_us-gaap_Depreciation_019f4207-03fd-7166-81a8-ef72cca7d64a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f4207-03fd-7cee-9d00-6e397e318101" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f4207-03fd-7527-a0d0-6e7c67b31a81" xlink:to="loc_us-gaap_Assets_019f4207-03fd-7cee-9d00-6e397e318101" xlink:type="arc" order="2"/>
  </link:definitionLink>
</link:linkbase>
