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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2023 Workiva-->
<!--r:8295ccb1-edea-4d26-a438-f5a5a177b18d,g:c04428c2-d802-45a4-822b-a5cc1cddee9c-->
<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.lpcorp.com/role/CoverPage" xlink:type="simple" xlink:href="lpx-20230630.xsd#CoverPage"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/CoverPage" xlink:type="extended" id="i8b92ab31346545649d966a2250aebff5_CoverPage">
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_aea5f390-ec05-4076-b422-2c48621ee9a5" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityIncorporationStateCountryCode_aea5f390-ec05-4076-b422-2c48621ee9a5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_f66379ea-1ae1-42c9-9bfe-d2e3387212dd" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_Security12bTitle"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_Security12bTitle_f66379ea-1ae1-42c9-9bfe-d2e3387212dd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_832b19e1-371a-4a66-9513-a139f34f9b24" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityTaxIdentificationNumber_832b19e1-371a-4a66-9513-a139f34f9b24" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_e27fa81e-1956-4f9f-b7f7-203875b15e25" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_TradingSymbol"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_TradingSymbol_e27fa81e-1956-4f9f-b7f7-203875b15e25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_fa2ce002-2215-428b-abaa-34a190770bea" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityRegistrantName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityRegistrantName_fa2ce002-2215-428b-abaa-34a190770bea" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_1ebe2659-a133-40c3-bb7e-1401005e7aba" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityAddressAddressLine1_1ebe2659-a133-40c3-bb7e-1401005e7aba" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_962bccd9-3bfd-4349-bba8-2f1636e5cdbb" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityAddressAddressLine2_962bccd9-3bfd-4349-bba8-2f1636e5cdbb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_87b8d20d-44e6-4af0-bef6-f356e55db1f1" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressCityOrTown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityAddressCityOrTown_87b8d20d-44e6-4af0-bef6-f356e55db1f1" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_ff20ca9a-988c-4861-b7bc-b884a66466c1" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressStateOrProvince"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityAddressStateOrProvince_ff20ca9a-988c-4861-b7bc-b884a66466c1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_7d1faa27-7fb9-4723-b3b5-12667ec5f24b" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressPostalZipCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityAddressPostalZipCode_7d1faa27-7fb9-4723-b3b5-12667ec5f24b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_3e267e7a-b4f5-4fef-b913-fe27b589bcf6" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_CityAreaCode_3e267e7a-b4f5-4fef-b913-fe27b589bcf6" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_3aa4ded9-f8ed-4552-8659-c7926c06783d" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_LocalPhoneNumber_3aa4ded9-f8ed-4552-8659-c7926c06783d" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_793f95dc-cbb8-4afa-9347-647160938f64" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCentralIndexKey"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityCentralIndexKey_793f95dc-cbb8-4afa-9347-647160938f64" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_60db64c1-46cf-4b1f-9d5e-a522ef2ac98b" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_CurrentFiscalYearEndDate_60db64c1-46cf-4b1f-9d5e-a522ef2ac98b" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_8fd61450-3552-443c-b945-1c37e3ffc3da" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentType"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_DocumentType_8fd61450-3552-443c-b945-1c37e3ffc3da" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_d2a86363-b806-4313-b3bf-1ab6a55b9418" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentPeriodEndDate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_DocumentPeriodEndDate_d2a86363-b806-4313-b3bf-1ab6a55b9418" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_718908c5-4522-45a1-aa43-082eabca521f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFileNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityFileNumber_718908c5-4522-45a1-aa43-082eabca521f" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_069f800f-9ace-460a-acc7-6b12c9b12625" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentFiscalYearFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_DocumentFiscalYearFocus_069f800f-9ace-460a-acc7-6b12c9b12625" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_595593e3-2239-4ff7-813b-789796c3133b" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_DocumentFiscalPeriodFocus_595593e3-2239-4ff7-813b-789796c3133b" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_70c586bb-82ad-4f9f-b320-b7c3f0678e14" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AmendmentFlag"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_AmendmentFlag_70c586bb-82ad-4f9f-b320-b7c3f0678e14" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_3f5a0af6-88b0-4710-ba37-d74e9eaa1783" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentQuarterlyReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_DocumentQuarterlyReport_3f5a0af6-88b0-4710-ba37-d74e9eaa1783" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_80fb7c83-fb8e-4b2a-8210-d1b5508d0efe" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentTransitionReport"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_DocumentTransitionReport_80fb7c83-fb8e-4b2a-8210-d1b5508d0efe" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_240398c5-7767-497e-946b-115a169835d9" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityInteractiveDataCurrent_240398c5-7767-497e-946b-115a169835d9" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_d9649430-32c4-4e42-99a9-8c6f54a23f0e" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_d9649430-32c4-4e42-99a9-8c6f54a23f0e" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_da403552-3d4a-4e53-a700-5353eb260b3b" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SecurityExchangeName"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_SecurityExchangeName_da403552-3d4a-4e53-a700-5353eb260b3b" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_08ea3a0f-1a92-4f29-8c08-5a70b6bece38" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFilerCategory"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityFilerCategory_08ea3a0f-1a92-4f29-8c08-5a70b6bece38" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_3743bde9-6b8c-4b4b-83d3-6b99ea041bbf" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityShellCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityShellCompany_3743bde9-6b8c-4b4b-83d3-6b99ea041bbf" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_ae7a0905-ffa1-4e18-a067-fb0638831616" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityEmergingGrowthCompany_ae7a0905-ffa1-4e18-a067-fb0638831616" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_d1efc20e-1e0f-4ac4-bbc9-77bb49bafb20" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntitySmallBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntitySmallBusiness_d1efc20e-1e0f-4ac4-bbc9-77bb49bafb20" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_577876d5-5425-49c4-9fb4-755d74992b74" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCurrentReportingStatus"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntityCurrentReportingStatus_577876d5-5425-49c4-9fb4-755d74992b74" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntitiesTable_57922ec7-dc86-404c-8b1e-066be0fdf3b8" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntitiesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_a762f5f9-8a72-4021-9ef8-e3a7504f03e9" xlink:to="loc_dei_EntitiesTable_57922ec7-dc86-404c-8b1e-066be0fdf3b8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7dfb0dc4-7212-4073-a69a-c68c9106e12e" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntitiesTable_57922ec7-dc86-404c-8b1e-066be0fdf3b8" xlink:to="loc_dei_LegalEntityAxis_7dfb0dc4-7212-4073-a69a-c68c9106e12e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7dfb0dc4-7212-4073-a69a-c68c9106e12e_default" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7dfb0dc4-7212-4073-a69a-c68c9106e12e" xlink:to="loc_dei_EntityDomain_7dfb0dc4-7212-4073-a69a-c68c9106e12e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5cf05dd4-36af-45d6-a890-f7c1619e00fa" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7dfb0dc4-7212-4073-a69a-c68c9106e12e" xlink:to="loc_dei_EntityDomain_5cf05dd4-36af-45d6-a890-f7c1619e00fa" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="lpx-20230630.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended" id="ib7ea28528e734b97bf2166fe2ca38e12_CondensedConsolidatedStatementsofComprehensiveIncome">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c643d0ac-ba21-4162-b2d7-f45a7e9e5f30" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_6b28eab8-726f-4b9c-8b67-bdd282872f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c643d0ac-ba21-4162-b2d7-f45a7e9e5f30" xlink:to="loc_us-gaap_ProfitLoss_6b28eab8-726f-4b9c-8b67-bdd282872f1d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_dc837c74-cd82-456a-9f60-12b202fef3b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c643d0ac-ba21-4162-b2d7-f45a7e9e5f30" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_dc837c74-cd82-456a-9f60-12b202fef3b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_624761d3-fa93-493a-8727-588c4745ec28" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_dc837c74-cd82-456a-9f60-12b202fef3b9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_624761d3-fa93-493a-8727-588c4745ec28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_fc0c0a1c-bb7e-453b-bcdb-f7eff7ac6532" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_dc837c74-cd82-456a-9f60-12b202fef3b9" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_fc0c0a1c-bb7e-453b-bcdb-f7eff7ac6532" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_e68b5cc5-9309-4d9b-8aea-6dbb60edfe92" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_dc837c74-cd82-456a-9f60-12b202fef3b9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_e68b5cc5-9309-4d9b-8aea-6dbb60edfe92" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_58f7cd77-9f81-40dc-a00e-525e494b32e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c643d0ac-ba21-4162-b2d7-f45a7e9e5f30" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_58f7cd77-9f81-40dc-a00e-525e494b32e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_43dfabc3-d1c6-4c76-9726-fa237c05db47" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c643d0ac-ba21-4162-b2d7-f45a7e9e5f30" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_43dfabc3-d1c6-4c76-9726-fa237c05db47" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_44fda43a-243b-4508-a582-7b808a25cc1b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c643d0ac-ba21-4162-b2d7-f45a7e9e5f30" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_44fda43a-243b-4508-a582-7b808a25cc1b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_ccc2def7-b53f-4eb4-ae2e-dd941b973716" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c643d0ac-ba21-4162-b2d7-f45a7e9e5f30" xlink:to="loc_us-gaap_StatementTable_ccc2def7-b53f-4eb4-ae2e-dd941b973716" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_08aa11e9-7e59-433a-8d3d-500b4562d141" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ccc2def7-b53f-4eb4-ae2e-dd941b973716" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_08aa11e9-7e59-433a-8d3d-500b4562d141" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_08aa11e9-7e59-433a-8d3d-500b4562d141_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_08aa11e9-7e59-433a-8d3d-500b4562d141" xlink:to="loc_us-gaap_EquityComponentDomain_08aa11e9-7e59-433a-8d3d-500b4562d141_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_5b30779d-f338-4b7e-95bc-115393919668" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_08aa11e9-7e59-433a-8d3d-500b4562d141" xlink:to="loc_us-gaap_EquityComponentDomain_5b30779d-f338-4b7e-95bc-115393919668" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_64afc36d-94bc-4326-bc46-a225d00e6032" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b30779d-f338-4b7e-95bc-115393919668" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_64afc36d-94bc-4326-bc46-a225d00e6032" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_a79f2d10-ada4-400a-be55-c376732cdd53" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5b30779d-f338-4b7e-95bc-115393919668" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_a79f2d10-ada4-400a-be55-c376732cdd53" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofStockholdersEquity" xlink:type="simple" xlink:href="lpx-20230630.xsd#CondensedConsolidatedStatementsofStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/CondensedConsolidatedStatementsofStockholdersEquity" xlink:type="extended" id="i9a04c94df049404bba8759200dd922f9_CondensedConsolidatedStatementsofStockholdersEquity">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_de723d9b-a97d-43bd-8b55-3d0beeba9b5f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_de723d9b-a97d-43bd-8b55-3d0beeba9b5f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValueOutstanding_25ded7f9-5b82-41cc-86b0-6fc74c7016b8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockValueOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_CommonStockValueOutstanding_25ded7f9-5b82-41cc-86b0-6fc74c7016b8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonShares_af3e391a-7458-4cfb-b105-0d75d82c1cf8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockCommonShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_TreasuryStockCommonShares_af3e391a-7458-4cfb-b105-0d75d82c1cf8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_90d8340b-bb80-4255-bac7-0884146552af" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_TreasuryStockValue_90d8340b-bb80-4255-bac7-0884146552af" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_f8154b2a-9fa4-4b5f-9e15-0b0d72337ce0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_f8154b2a-9fa4-4b5f-9e15-0b0d72337ce0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c5b2d2df-d1ac-4108-a948-394b1d894b7e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c5b2d2df-d1ac-4108-a948-394b1d894b7e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_5579ec58-a1ba-45fd-bbcf-5d27144f7b2e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_5579ec58-a1ba-45fd-bbcf-5d27144f7b2e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_21cc52e3-c453-4e60-ae88-edd1fec2e6ce" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_NetIncomeLoss_21cc52e3-c453-4e60-ae88-edd1fec2e6ce" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividends_bf621e7e-3f6f-41cd-9eda-e8c2eb32cdd8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfDividends"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_PaymentsOfDividends_bf621e7e-3f6f-41cd-9eda-e8c2eb32cdd8" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_1097e842-def2-4398-b4da-8311a49a159e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_1097e842-def2-4398-b4da-8311a49a159e" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_64aec169-cb61-4d57-82d2-717b794fa876" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_64aec169-cb61-4d57-82d2-717b794fa876" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_d2a37b36-c7d2-4c2d-b6bf-379268831246" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_d2a37b36-c7d2-4c2d-b6bf-379268831246" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_dbb1e89a-a766-4440-b537-548f4c1ac674" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_dbb1e89a-a766-4440-b537-548f4c1ac674" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_CommonstockValueSharesacquired_c541042f-5bca-4e05-a952-2ab1e61ce9f7" xlink:href="lpx-20230630.xsd#lpx_CommonstockValueSharesacquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_lpx_CommonstockValueSharesacquired_c541042f-5bca-4e05-a952-2ab1e61ce9f7" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_b2be0204-46c1-4999-bd36-c578981995c3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_b2be0204-46c1-4999-bd36-c578981995c3" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_dc9454d9-38f7-4839-9889-d6f4296bca11" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_dc9454d9-38f7-4839-9889-d6f4296bca11" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_23f80665-d6ff-41f5-a7fc-ebbf5ee18912" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_StockholdersEquity_23f80665-d6ff-41f5-a7fc-ebbf5ee18912" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_CommonstockSharesacquired_f25e8e0d-c727-4098-9aaa-e6852dec17f5" xlink:href="lpx-20230630.xsd#lpx_CommonstockSharesacquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_lpx_CommonstockSharesacquired_f25e8e0d-c727-4098-9aaa-e6852dec17f5" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_920b6cbb-bbb5-4186-b414-12e7ad43e64e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_e65bac8a-ed39-4b36-bbef-4f4660726153" xlink:to="loc_us-gaap_StatementTable_920b6cbb-bbb5-4186-b414-12e7ad43e64e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_e18e1aeb-56e4-467e-9887-456b751d60d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_920b6cbb-bbb5-4186-b414-12e7ad43e64e" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_e18e1aeb-56e4-467e-9887-456b751d60d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_e18e1aeb-56e4-467e-9887-456b751d60d2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_e18e1aeb-56e4-467e-9887-456b751d60d2" xlink:to="loc_us-gaap_EquityComponentDomain_e18e1aeb-56e4-467e-9887-456b751d60d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_49b0095a-5d20-4a68-9410-db895306ba9d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_e18e1aeb-56e4-467e-9887-456b751d60d2" xlink:to="loc_us-gaap_EquityComponentDomain_49b0095a-5d20-4a68-9410-db895306ba9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_c2e6e206-366c-416a-b051-4fd22b25ef7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_49b0095a-5d20-4a68-9410-db895306ba9d" xlink:to="loc_us-gaap_CommonStockMember_c2e6e206-366c-416a-b051-4fd22b25ef7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_0cab6e85-57d3-466c-8d19-d77c90e48edc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_49b0095a-5d20-4a68-9410-db895306ba9d" xlink:to="loc_us-gaap_TreasuryStockCommonMember_0cab6e85-57d3-466c-8d19-d77c90e48edc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_c56141c6-c78d-4a2c-86e8-b1ff594b0d0f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_49b0095a-5d20-4a68-9410-db895306ba9d" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_c56141c6-c78d-4a2c-86e8-b1ff594b0d0f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_721dbd03-6f00-48ba-b187-2d9be76e53ff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_49b0095a-5d20-4a68-9410-db895306ba9d" xlink:to="loc_us-gaap_RetainedEarningsMember_721dbd03-6f00-48ba-b187-2d9be76e53ff" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_3850f017-44bc-4b03-97b2-7cbb80ad17c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_49b0095a-5d20-4a68-9410-db895306ba9d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_3850f017-44bc-4b03-97b2-7cbb80ad17c8" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/RevenueTables" xlink:type="simple" xlink:href="lpx-20230630.xsd#RevenueTables"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/RevenueTables" xlink:type="extended" id="i6dfe2af34f24445da138548467b289d8_RevenueTables">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_fe274e25-acbd-4384-b40f-1d2240a28250" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_85b72f0d-1805-419f-82da-43df982b7b90" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_fe274e25-acbd-4384-b40f-1d2240a28250" xlink:to="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_85b72f0d-1805-419f-82da-43df982b7b90" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_30a21ccc-7f99-4e7d-81b3-a454e282bdba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_fe274e25-acbd-4384-b40f-1d2240a28250" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_30a21ccc-7f99-4e7d-81b3-a454e282bdba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_52b45ae4-092e-4fdd-ae34-114cde0e6ebf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_30a21ccc-7f99-4e7d-81b3-a454e282bdba" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_52b45ae4-092e-4fdd-ae34-114cde0e6ebf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_52b45ae4-092e-4fdd-ae34-114cde0e6ebf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_52b45ae4-092e-4fdd-ae34-114cde0e6ebf" xlink:to="loc_us-gaap_SegmentDomain_52b45ae4-092e-4fdd-ae34-114cde0e6ebf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_204ef401-b436-4db5-90fb-230044944def" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_52b45ae4-092e-4fdd-ae34-114cde0e6ebf" xlink:to="loc_us-gaap_SegmentDomain_204ef401-b436-4db5-90fb-230044944def" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/GoodwillandOtherIntangibleAssetsTables" xlink:type="simple" xlink:href="lpx-20230630.xsd#GoodwillandOtherIntangibleAssetsTables"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/GoodwillandOtherIntangibleAssetsTables" xlink:type="extended" id="i8a86edbfda6e4d73a9ce6250ce4b7a5a_GoodwillandOtherIntangibleAssetsTables">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_b0980fdc-93cf-4faf-a175-9e93da3d732d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock_44a53f94-6044-4119-b335-fa94c7da018b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_b0980fdc-93cf-4faf-a175-9e93da3d732d" xlink:to="loc_us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock_44a53f94-6044-4119-b335-fa94c7da018b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_a312aa3d-5404-4b4a-ac5c-310fd7cbc94b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_b0980fdc-93cf-4faf-a175-9e93da3d732d" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_a312aa3d-5404-4b4a-ac5c-310fd7cbc94b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_ce70d9f6-a516-4dda-acd4-4afc1789b751" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_a312aa3d-5404-4b4a-ac5c-310fd7cbc94b" xlink:to="loc_srt_ConsolidationItemsAxis_ce70d9f6-a516-4dda-acd4-4afc1789b751" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_ce70d9f6-a516-4dda-acd4-4afc1789b751_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_ce70d9f6-a516-4dda-acd4-4afc1789b751" xlink:to="loc_srt_ConsolidationItemsDomain_ce70d9f6-a516-4dda-acd4-4afc1789b751_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_bf069cd4-298d-4835-ba7c-d9c16491dbf5" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_ce70d9f6-a516-4dda-acd4-4afc1789b751" xlink:to="loc_srt_ConsolidationItemsDomain_bf069cd4-298d-4835-ba7c-d9c16491dbf5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_0d668444-43fc-4c04-b2b2-f05f7f8b26ba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_a312aa3d-5404-4b4a-ac5c-310fd7cbc94b" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_0d668444-43fc-4c04-b2b2-f05f7f8b26ba" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_0d668444-43fc-4c04-b2b2-f05f7f8b26ba_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0d668444-43fc-4c04-b2b2-f05f7f8b26ba" xlink:to="loc_us-gaap_SegmentDomain_0d668444-43fc-4c04-b2b2-f05f7f8b26ba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_50695717-6cd8-42d7-ad1b-3513d53b5047" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_0d668444-43fc-4c04-b2b2-f05f7f8b26ba" xlink:to="loc_us-gaap_SegmentDomain_50695717-6cd8-42d7-ad1b-3513d53b5047" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_dd632f0d-ea39-4eb6-a4b9-75ee8edaaab8" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_a312aa3d-5404-4b4a-ac5c-310fd7cbc94b" xlink:to="loc_srt_RangeAxis_dd632f0d-ea39-4eb6-a4b9-75ee8edaaab8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_dd632f0d-ea39-4eb6-a4b9-75ee8edaaab8_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_dd632f0d-ea39-4eb6-a4b9-75ee8edaaab8" xlink:to="loc_srt_RangeMember_dd632f0d-ea39-4eb6-a4b9-75ee8edaaab8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5e97d2aa-3a53-41e5-b996-1a70b9d4b334" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_dd632f0d-ea39-4eb6-a4b9-75ee8edaaab8" xlink:to="loc_srt_RangeMember_5e97d2aa-3a53-41e5-b996-1a70b9d4b334" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/AccumulatedComprehensiveLossTables" xlink:type="simple" xlink:href="lpx-20230630.xsd#AccumulatedComprehensiveLossTables"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/AccumulatedComprehensiveLossTables" xlink:type="extended" id="i543d48f0499a494788d8f0e8541a77f7_AccumulatedComprehensiveLossTables">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_2b3f2f90-e40c-4130-ac08-60b4ccca215b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_3bb80c6f-8bb9-47d4-9079-6c22af04a2c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_2b3f2f90-e40c-4130-ac08-60b4ccca215b" xlink:to="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_3bb80c6f-8bb9-47d4-9079-6c22af04a2c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_bb306481-8046-4559-8f57-697d8c7a7260" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_2b3f2f90-e40c-4130-ac08-60b4ccca215b" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_bb306481-8046-4559-8f57-697d8c7a7260" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_b9680885-b7ef-4188-93a3-8cfa1c2e19b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_bb306481-8046-4559-8f57-697d8c7a7260" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_b9680885-b7ef-4188-93a3-8cfa1c2e19b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_b9680885-b7ef-4188-93a3-8cfa1c2e19b1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b9680885-b7ef-4188-93a3-8cfa1c2e19b1" xlink:to="loc_us-gaap_EquityComponentDomain_b9680885-b7ef-4188-93a3-8cfa1c2e19b1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_3ea8e141-c59a-4383-89e7-e546b2a8805b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b9680885-b7ef-4188-93a3-8cfa1c2e19b1" xlink:to="loc_us-gaap_EquityComponentDomain_3ea8e141-c59a-4383-89e7-e546b2a8805b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/NatureofOperationsandBasisforPresentationDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#NatureofOperationsandBasisforPresentationDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/NatureofOperationsandBasisforPresentationDetails" xlink:type="extended" id="ia9ee9f3e951a423cb436464a06e9b92a_NatureofOperationsandBasisforPresentationDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionLineItems_b86ca15d-ef34-4280-b379-4690ed443972" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionConsiderationTransferred_2bb98e47-b6de-4478-b87b-9efb586eda5a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetAcquisitionConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_b86ca15d-ef34-4280-b379-4690ed443972" xlink:to="loc_us-gaap_AssetAcquisitionConsiderationTransferred_2bb98e47-b6de-4478-b87b-9efb586eda5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionTable_e3b1ab81-8d00-4567-8d9f-7dc8f300e6f3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AssetAcquisitionLineItems_b86ca15d-ef34-4280-b379-4690ed443972" xlink:to="loc_us-gaap_AssetAcquisitionTable_e3b1ab81-8d00-4567-8d9f-7dc8f300e6f3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionAxis_3d227f3d-1e74-4460-a388-7ef9d32d0af9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AssetAcquisitionTable_e3b1ab81-8d00-4567-8d9f-7dc8f300e6f3" xlink:to="loc_us-gaap_AssetAcquisitionAxis_3d227f3d-1e74-4460-a388-7ef9d32d0af9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_3d227f3d-1e74-4460-a388-7ef9d32d0af9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AssetAcquisitionAxis_3d227f3d-1e74-4460-a388-7ef9d32d0af9" xlink:to="loc_us-gaap_AssetAcquisitionDomain_3d227f3d-1e74-4460-a388-7ef9d32d0af9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetAcquisitionDomain_3f09f4ba-e20f-4939-9007-3b6b9a296a96" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetAcquisitionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AssetAcquisitionAxis_3d227f3d-1e74-4460-a388-7ef9d32d0af9" xlink:to="loc_us-gaap_AssetAcquisitionDomain_3f09f4ba-e20f-4939-9007-3b6b9a296a96" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_WawaOntarioManufacturingFacilityMember_f3a7e72a-2747-40d1-9cca-00c49e95d3d6" xlink:href="lpx-20230630.xsd#lpx_WawaOntarioManufacturingFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetAcquisitionDomain_3f09f4ba-e20f-4939-9007-3b6b9a296a96" xlink:to="loc_lpx_WawaOntarioManufacturingFacilityMember_f3a7e72a-2747-40d1-9cca-00c49e95d3d6" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/RevenueDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#RevenueDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/RevenueDetails" xlink:type="extended" id="i1914d79d5c1e4d52a53b0057b9bc5825_RevenueDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_485a0d11-14e1-430e-9e0a-0c383ef3cb84" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_5c9e6aa5-f3c7-48e2-a613-f1e932a2579a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_485a0d11-14e1-430e-9e0a-0c383ef3cb84" xlink:to="loc_us-gaap_Revenues_5c9e6aa5-f3c7-48e2-a613-f1e932a2579a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_7049ca4a-4ae5-4f19-b37b-0965ad813fe2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_485a0d11-14e1-430e-9e0a-0c383ef3cb84" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_7049ca4a-4ae5-4f19-b37b-0965ad813fe2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ProducttypeAxis_bb6c9046-e198-409e-8ae2-9da6f0be92c0" xlink:href="lpx-20230630.xsd#lpx_ProducttypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_7049ca4a-4ae5-4f19-b37b-0965ad813fe2" xlink:to="loc_lpx_ProducttypeAxis_bb6c9046-e198-409e-8ae2-9da6f0be92c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ProducttypeDomain_bb6c9046-e198-409e-8ae2-9da6f0be92c0_default" xlink:href="lpx-20230630.xsd#lpx_ProducttypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_lpx_ProducttypeAxis_bb6c9046-e198-409e-8ae2-9da6f0be92c0" xlink:to="loc_lpx_ProducttypeDomain_bb6c9046-e198-409e-8ae2-9da6f0be92c0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ProducttypeDomain_0765fe81-4230-4ba4-b16f-2e2102d6b81e" xlink:href="lpx-20230630.xsd#lpx_ProducttypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_lpx_ProducttypeAxis_bb6c9046-e198-409e-8ae2-9da6f0be92c0" xlink:to="loc_lpx_ProducttypeDomain_0765fe81-4230-4ba4-b16f-2e2102d6b81e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ValueaddMember_adc2fd00-3c7a-4408-888f-2dc82ff9179f" xlink:href="lpx-20230630.xsd#lpx_ValueaddMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_lpx_ProducttypeDomain_0765fe81-4230-4ba4-b16f-2e2102d6b81e" xlink:to="loc_lpx_ValueaddMember_adc2fd00-3c7a-4408-888f-2dc82ff9179f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_CommodityProductsMember_aab14218-618b-4e64-8ea7-6e53f0ca081e" xlink:href="lpx-20230630.xsd#lpx_CommodityProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_lpx_ProducttypeDomain_0765fe81-4230-4ba4-b16f-2e2102d6b81e" xlink:to="loc_lpx_CommodityProductsMember_aab14218-618b-4e64-8ea7-6e53f0ca081e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OtherProductTypesMember_9ba6e737-68da-4b33-ab1b-ebee8f4c3e07" xlink:href="lpx-20230630.xsd#lpx_OtherProductTypesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_lpx_ProducttypeDomain_0765fe81-4230-4ba4-b16f-2e2102d6b81e" xlink:to="loc_lpx_OtherProductTypesMember_9ba6e737-68da-4b33-ab1b-ebee8f4c3e07" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_59450b94-4b1e-431e-bedc-1a20ee59c247" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_7049ca4a-4ae5-4f19-b37b-0965ad813fe2" xlink:to="loc_srt_ProductOrServiceAxis_59450b94-4b1e-431e-bedc-1a20ee59c247" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_59450b94-4b1e-431e-bedc-1a20ee59c247_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_59450b94-4b1e-431e-bedc-1a20ee59c247" xlink:to="loc_srt_ProductsAndServicesDomain_59450b94-4b1e-431e-bedc-1a20ee59c247_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_001a90fb-f2ea-4b99-80d2-9afeea0dd6ea" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_59450b94-4b1e-431e-bedc-1a20ee59c247" xlink:to="loc_srt_ProductsAndServicesDomain_001a90fb-f2ea-4b99-80d2-9afeea0dd6ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_SmartSideStrandsidingMember_85f1019f-164c-4d64-b210-fb595f30bbe8" xlink:href="lpx-20230630.xsd#lpx_SmartSideStrandsidingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_001a90fb-f2ea-4b99-80d2-9afeea0dd6ea" xlink:to="loc_lpx_SmartSideStrandsidingMember_85f1019f-164c-4d64-b210-fb595f30bbe8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OSBvalueaddMember_57fe9ad6-c4eb-493e-acc4-958fcca887cf" xlink:href="lpx-20230630.xsd#lpx_OSBvalueaddMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_001a90fb-f2ea-4b99-80d2-9afeea0dd6ea" xlink:to="loc_lpx_OSBvalueaddMember_57fe9ad6-c4eb-493e-acc4-958fcca887cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OSBcommodityMember_feff646a-69ee-41ff-80f1-df7621dd7897" xlink:href="lpx-20230630.xsd#lpx_OSBcommodityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_001a90fb-f2ea-4b99-80d2-9afeea0dd6ea" xlink:to="loc_lpx_OSBcommodityMember_feff646a-69ee-41ff-80f1-df7621dd7897" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OtherproductsMember_c7cdbcf4-215d-44fb-a9b8-1128ff3ad855" xlink:href="lpx-20230630.xsd#lpx_OtherproductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_001a90fb-f2ea-4b99-80d2-9afeea0dd6ea" xlink:to="loc_lpx_OtherproductsMember_c7cdbcf4-215d-44fb-a9b8-1128ff3ad855" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f6ecad1f-4b2e-4a06-910a-0df28e4f10ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_7049ca4a-4ae5-4f19-b37b-0965ad813fe2" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f6ecad1f-4b2e-4a06-910a-0df28e4f10ec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f6ecad1f-4b2e-4a06-910a-0df28e4f10ec_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f6ecad1f-4b2e-4a06-910a-0df28e4f10ec" xlink:to="loc_us-gaap_SegmentDomain_f6ecad1f-4b2e-4a06-910a-0df28e4f10ec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f6ecad1f-4b2e-4a06-910a-0df28e4f10ec" xlink:to="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_SidingMember_06f03dac-7b85-4380-b514-94cace6aede3" xlink:href="lpx-20230630.xsd#lpx_SidingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:to="loc_lpx_SidingMember_06f03dac-7b85-4380-b514-94cace6aede3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OsbMember_c838b268-3418-4c42-b5c2-f326f294d51a" xlink:href="lpx-20230630.xsd#lpx_OsbMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:to="loc_lpx_OsbMember_c838b268-3418-4c42-b5c2-f326f294d51a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_EWPMember_d0bc8757-3595-4d10-98fb-bd81ca4b51e1" xlink:href="lpx-20230630.xsd#lpx_EWPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:to="loc_lpx_EWPMember_d0bc8757-3595-4d10-98fb-bd81ca4b51e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_85439064-d26b-497e-b9ab-e0e3d078424f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:to="loc_us-gaap_AllOtherSegmentsMember_85439064-d26b-497e-b9ab-e0e3d078424f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_LPSouthAmericaMember_a0d959b4-d859-4df8-983f-54593d813266" xlink:href="lpx-20230630.xsd#lpx_LPSouthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:to="loc_lpx_LPSouthAmericaMember_a0d959b4-d859-4df8-983f-54593d813266" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_IntersegmentMember_efaaa710-a9bd-432d-9bbc-a0c47a268dbe" xlink:href="lpx-20230630.xsd#lpx_IntersegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3c6407f5-07f8-41c7-b627-4793abbc61e6" xlink:to="loc_lpx_IntersegmentMember_efaaa710-a9bd-432d-9bbc-a0c47a268dbe" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/FairValueMeasurementsDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#FairValueMeasurementsDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/FairValueMeasurementsDetails" xlink:type="extended" id="i0cb80a191d33494d8abf09324da80cbc_FairValueMeasurementsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_35ce1fe8-3777-4fdf-bb52-d9673b52535c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_ee477b43-ea63-43a9-9b19-56aff2a3cd64" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_35ce1fe8-3777-4fdf-bb52-d9673b52535c" xlink:to="loc_us-gaap_LongTermDebtFairValue_ee477b43-ea63-43a9-9b19-56aff2a3cd64" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_910e3a69-1851-4039-a934-0282aa17da68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_35ce1fe8-3777-4fdf-bb52-d9673b52535c" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_910e3a69-1851-4039-a934-0282aa17da68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_a4f62ba6-2e6d-4cfb-b67e-6c16fa90da2b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_35ce1fe8-3777-4fdf-bb52-d9673b52535c" xlink:to="loc_us-gaap_LongTermDebt_a4f62ba6-2e6d-4cfb-b67e-6c16fa90da2b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_5d4675ee-f644-4c50-9871-81b81214880d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_35ce1fe8-3777-4fdf-bb52-d9673b52535c" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_5d4675ee-f644-4c50-9871-81b81214880d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_3234a62c-59bc-4e6b-b62e-81b15dbe6491" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_35ce1fe8-3777-4fdf-bb52-d9673b52535c" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_3234a62c-59bc-4e6b-b62e-81b15dbe6491" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_b64fb3c7-820d-4a22-bee4-14aad4e717eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_35ce1fe8-3777-4fdf-bb52-d9673b52535c" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_b64fb3c7-820d-4a22-bee4-14aad4e717eb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_3e3bb225-e3fd-458d-82ee-17e3134fb3d9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_b64fb3c7-820d-4a22-bee4-14aad4e717eb" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_3e3bb225-e3fd-458d-82ee-17e3134fb3d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_3e3bb225-e3fd-458d-82ee-17e3134fb3d9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_3e3bb225-e3fd-458d-82ee-17e3134fb3d9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_3e3bb225-e3fd-458d-82ee-17e3134fb3d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8c54a6c2-61f0-4601-99bc-2de1e1681f58" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_3e3bb225-e3fd-458d-82ee-17e3134fb3d9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8c54a6c2-61f0-4601-99bc-2de1e1681f58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_SeniorUnsecuredNotesMaturing2029Member_244bda20-3150-45e2-966a-5740667fc8fa" xlink:href="lpx-20230630.xsd#lpx_SeniorUnsecuredNotesMaturing2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8c54a6c2-61f0-4601-99bc-2de1e1681f58" xlink:to="loc_lpx_SeniorUnsecuredNotesMaturing2029Member_244bda20-3150-45e2-966a-5740667fc8fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_a3704bf4-24cf-427f-a132-d7ee476afda3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8c54a6c2-61f0-4601-99bc-2de1e1681f58" xlink:to="loc_us-gaap_LineOfCreditMember_a3704bf4-24cf-427f-a132-d7ee476afda3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_LetterOfCreditSubLimitMember_90a6af9d-c9e4-4f96-ba07-f0a5ee3cc064" xlink:href="lpx-20230630.xsd#lpx_LetterOfCreditSubLimitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8c54a6c2-61f0-4601-99bc-2de1e1681f58" xlink:to="loc_lpx_LetterOfCreditSubLimitMember_90a6af9d-c9e4-4f96-ba07-f0a5ee3cc064" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8ef0bb5c-f2d6-4783-a781-4ff0b808cc51" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_b64fb3c7-820d-4a22-bee4-14aad4e717eb" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8ef0bb5c-f2d6-4783-a781-4ff0b808cc51" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8ef0bb5c-f2d6-4783-a781-4ff0b808cc51_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8ef0bb5c-f2d6-4783-a781-4ff0b808cc51" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_8ef0bb5c-f2d6-4783-a781-4ff0b808cc51_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_957b0ecd-49c2-45b1-9338-a759c3d9908f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_8ef0bb5c-f2d6-4783-a781-4ff0b808cc51" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_957b0ecd-49c2-45b1-9338-a759c3d9908f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_a1994c07-8e8b-4f22-b88d-2ec66d2bde6d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_b64fb3c7-820d-4a22-bee4-14aad4e717eb" xlink:to="loc_us-gaap_CreditFacilityAxis_a1994c07-8e8b-4f22-b88d-2ec66d2bde6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_a1994c07-8e8b-4f22-b88d-2ec66d2bde6d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_a1994c07-8e8b-4f22-b88d-2ec66d2bde6d" xlink:to="loc_us-gaap_CreditFacilityDomain_a1994c07-8e8b-4f22-b88d-2ec66d2bde6d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_92dd9bf5-fe9a-406e-929d-6768f9f36e77" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_a1994c07-8e8b-4f22-b88d-2ec66d2bde6d" xlink:to="loc_us-gaap_CreditFacilityDomain_92dd9bf5-fe9a-406e-929d-6768f9f36e77" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_10621757-c5fe-4196-8d8a-05ac798b6350" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_92dd9bf5-fe9a-406e-929d-6768f9f36e77" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_10621757-c5fe-4196-8d8a-05ac798b6350" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_51a4cf03-dce0-4c91-bae0-d1fac82a94f3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_b64fb3c7-820d-4a22-bee4-14aad4e717eb" xlink:to="loc_us-gaap_DebtInstrumentAxis_51a4cf03-dce0-4c91-bae0-d1fac82a94f3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_51a4cf03-dce0-4c91-bae0-d1fac82a94f3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_51a4cf03-dce0-4c91-bae0-d1fac82a94f3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_51a4cf03-dce0-4c91-bae0-d1fac82a94f3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ec9431db-866a-44e6-9b2d-01dc59392c54" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_51a4cf03-dce0-4c91-bae0-d1fac82a94f3" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ec9431db-866a-44e6-9b2d-01dc59392c54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_AmendedCreditFacilityMember_ff1acc02-4823-4e22-a847-1960c45c0826" xlink:href="lpx-20230630.xsd#lpx_AmendedCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ec9431db-866a-44e6-9b2d-01dc59392c54" xlink:to="loc_lpx_AmendedCreditFacilityMember_ff1acc02-4823-4e22-a847-1960c45c0826" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/InventoriesDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#InventoriesDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/InventoriesDetails" xlink:type="extended" id="i8dabf67e75a74a08a47260afde69713a_InventoriesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryLineItems_ac2f52d9-f0a4-406e-b270-e83b0835d3e5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_Logs_57e2387f-34dc-4b14-a09f-cdccfa8b369d" xlink:href="lpx-20230630.xsd#lpx_Logs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_ac2f52d9-f0a4-406e-b270-e83b0835d3e5" xlink:to="loc_lpx_Logs_57e2387f-34dc-4b14-a09f-cdccfa8b369d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsNetOfReserves_f1484ad7-390d-421a-8f8a-d6d9b55134ff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryRawMaterialsNetOfReserves"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_ac2f52d9-f0a4-406e-b270-e83b0835d3e5" xlink:to="loc_us-gaap_InventoryRawMaterialsNetOfReserves_f1484ad7-390d-421a-8f8a-d6d9b55134ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcessNetOfReserves_7a43701d-b8b7-4254-acd8-d33abb21b527" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWorkInProcessNetOfReserves"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_ac2f52d9-f0a4-406e-b270-e83b0835d3e5" xlink:to="loc_us-gaap_InventoryWorkInProcessNetOfReserves_7a43701d-b8b7-4254-acd8-d33abb21b527" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_6e5c4387-7fb3-468f-9f07-983e9a91a0ba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_ac2f52d9-f0a4-406e-b270-e83b0835d3e5" xlink:to="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_6e5c4387-7fb3-468f-9f07-983e9a91a0ba" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_c433824a-d6a2-4400-acee-13f6ca580471" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_ac2f52d9-f0a4-406e-b270-e83b0835d3e5" xlink:to="loc_us-gaap_InventoryNet_c433824a-d6a2-4400-acee-13f6ca580471" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryCurrentTable_df6f8137-b9c7-4d82-a47f-0f1ada08b8a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryCurrentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_ac2f52d9-f0a4-406e-b270-e83b0835d3e5" xlink:to="loc_us-gaap_InventoryCurrentTable_df6f8137-b9c7-4d82-a47f-0f1ada08b8a0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryAxis_c5c7e1dc-4db8-47e1-a73c-f52dea701c51" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PublicUtilitiesInventoryAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_df6f8137-b9c7-4d82-a47f-0f1ada08b8a0" xlink:to="loc_us-gaap_PublicUtilitiesInventoryAxis_c5c7e1dc-4db8-47e1-a73c-f52dea701c51" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_c5c7e1dc-4db8-47e1-a73c-f52dea701c51_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_c5c7e1dc-4db8-47e1-a73c-f52dea701c51" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_c5c7e1dc-4db8-47e1-a73c-f52dea701c51_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_fc435de0-ae1d-4ff7-9083-0539e42b7c6b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_c5c7e1dc-4db8-47e1-a73c-f52dea701c51" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_fc435de0-ae1d-4ff7-9083-0539e42b7c6b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/DiscontinuedOperationsNarrativeDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#DiscontinuedOperationsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/DiscontinuedOperationsNarrativeDetails" xlink:type="extended" id="i4f0f35890a89414192f6dee18209f87b_DiscontinuedOperationsNarrativeDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_06848d03-e9ae-4f59-ab00-461425c1a7a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_06848d03-e9ae-4f59-ab00-461425c1a7a3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_DiscontinuedOperationDirectTransactionCosts_3e38d4c3-d741-4a92-9955-f519765eae0f" xlink:href="lpx-20230630.xsd#lpx_DiscontinuedOperationDirectTransactionCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_lpx_DiscontinuedOperationDirectTransactionCosts_3e38d4c3-d741-4a92-9955-f519765eae0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_c6966819-7cef-4aa9-9409-7ebde71d3a12" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_c6966819-7cef-4aa9-9409-7ebde71d3a12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalBeforeIncomeTax_155da1db-db02-4b73-b9f2-dc4fa3ffbfda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_us-gaap_DiscontinuedOperationProvisionForLossGainOnDisposalBeforeIncomeTax_155da1db-db02-4b73-b9f2-dc4fa3ffbfda" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_360f21bc-8373-43aa-b282-095ed22959fb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_360f21bc-8373-43aa-b282-095ed22959fb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_b229b89e-4f2c-46da-a030-2f6dd882a614" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_b229b89e-4f2c-46da-a030-2f6dd882a614" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfInterestInJointVenture_af205510-03af-42fc-bdd0-7b948789cf3f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromDivestitureOfInterestInJointVenture"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfInterestInJointVenture_af205510-03af-42fc-bdd0-7b948789cf3f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8d70adf4-2acc-4197-8288-778a7989dea9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_8fea0512-c498-4ce2-ab4a-40bb24dba74e" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8d70adf4-2acc-4197-8288-778a7989dea9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b675a489-7173-4871-8c20-bd9958e57491" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8d70adf4-2acc-4197-8288-778a7989dea9" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b675a489-7173-4871-8c20-bd9958e57491" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b675a489-7173-4871-8c20-bd9958e57491_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b675a489-7173-4871-8c20-bd9958e57491" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b675a489-7173-4871-8c20-bd9958e57491_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_79e7bd4e-f8da-4293-8002-a08fa60c607c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b675a489-7173-4871-8c20-bd9958e57491" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_79e7bd4e-f8da-4293-8002-a08fa60c607c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_EWPSegmentAssetsMember_b052777d-895f-4b1d-8d62-99d630086a56" xlink:href="lpx-20230630.xsd#lpx_EWPSegmentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_79e7bd4e-f8da-4293-8002-a08fa60c607c" xlink:to="loc_lpx_EWPSegmentAssetsMember_b052777d-895f-4b1d-8d62-99d630086a56" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ResoluteForestProductsIncMember_98ed99e1-70f7-42d4-8422-6ef929f8516b" xlink:href="lpx-20230630.xsd#lpx_ResoluteForestProductsIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_79e7bd4e-f8da-4293-8002-a08fa60c607c" xlink:to="loc_lpx_ResoluteForestProductsIncMember_98ed99e1-70f7-42d4-8422-6ef929f8516b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_ea13292b-4105-4bbe-92b8-0d5e76e0a963" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8d70adf4-2acc-4197-8288-778a7989dea9" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_ea13292b-4105-4bbe-92b8-0d5e76e0a963" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_ea13292b-4105-4bbe-92b8-0d5e76e0a963_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_ea13292b-4105-4bbe-92b8-0d5e76e0a963" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_ea13292b-4105-4bbe-92b8-0d5e76e0a963_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_43b764b8-30e5-40dd-997a-cf8050c81e6e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_ea13292b-4105-4bbe-92b8-0d5e76e0a963" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_43b764b8-30e5-40dd-997a-cf8050c81e6e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_daf2a349-08c3-4b81-a0c7-352139d973cd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_43b764b8-30e5-40dd-997a-cf8050c81e6e" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_daf2a349-08c3-4b81-a0c7-352139d973cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_04c61755-1bcb-4674-9bb7-302a63030f11" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationsHeldforsaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_43b764b8-30e5-40dd-997a-cf8050c81e6e" xlink:to="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_04c61755-1bcb-4674-9bb7-302a63030f11" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_58730e64-ee4a-46ab-9b10-5df6e24c16a4" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_8d70adf4-2acc-4197-8288-778a7989dea9" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_58730e64-ee4a-46ab-9b10-5df6e24c16a4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_58730e64-ee4a-46ab-9b10-5df6e24c16a4_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_58730e64-ee4a-46ab-9b10-5df6e24c16a4" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_58730e64-ee4a-46ab-9b10-5df6e24c16a4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_c2287922-49c1-4bcb-a772-61ffa09441b7" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_58730e64-ee4a-46ab-9b10-5df6e24c16a4" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_c2287922-49c1-4bcb-a772-61ffa09441b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_EWPSegmentAssetsMember_20a0d711-358a-47b7-84be-feb6ee346696" xlink:href="lpx-20230630.xsd#lpx_EWPSegmentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_c2287922-49c1-4bcb-a772-61ffa09441b7" xlink:to="loc_lpx_EWPSegmentAssetsMember_20a0d711-358a-47b7-84be-feb6ee346696" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/DiscontinuedOperationsFinancialResultsofEWPSegmentDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#DiscontinuedOperationsFinancialResultsofEWPSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/DiscontinuedOperationsFinancialResultsofEWPSegmentDetails" xlink:type="extended" id="idda39d212b3d4ea1829448d0a63f90fe_DiscontinuedOperationsFinancialResultsofEWPSegmentDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_5c7e2e65-a3e4-4e0b-b431-a6e1d9ff7385" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_5c7e2e65-a3e4-4e0b-b431-a6e1d9ff7385" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_d7082262-849e-4b4a-846b-a958949221f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold_d7082262-849e-4b4a-846b-a958949221f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss_6d995f80-ad66-480c-a05f-22300d8988ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss_6d995f80-ad66-480c-a05f-22300d8988ca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_2e4c6517-8452-48cb-8819-3c4e4849e5c3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense_2e4c6517-8452-48cb-8819-3c4e4849e5c3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_47f6309f-4ddf-47ae-8ca5-301345ef825d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss_47f6309f-4ddf-47ae-8ca5-301345ef825d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_05640cf3-5517-45a2-a57a-9016600d8795" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax_05640cf3-5517-45a2-a57a-9016600d8795" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_668ea5a4-fa01-4a4f-9149-a8f421a3da7e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax_668ea5a4-fa01-4a4f-9149-a8f421a3da7e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_8be630c3-687e-4b64-bfb6-c8f20a3d1d8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation_8be630c3-687e-4b64-bfb6-c8f20a3d1d8e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_1988d20c-681d-4209-b94e-df5111d1487b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_1988d20c-681d-4209-b94e-df5111d1487b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_14da038c-2498-4a78-8c74-54b413e29e38" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations_14da038c-2498-4a78-8c74-54b413e29e38" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_e8f59ddf-e693-478f-bea9-f0d8c07afc8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations_e8f59ddf-e693-478f-bea9-f0d8c07afc8e" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e51f42a4-2ff7-44be-b65a-f54208e8ac1d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_22a54de6-0f02-486b-acbb-6125c4a45357" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e51f42a4-2ff7-44be-b65a-f54208e8ac1d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_424c6ef1-4982-429f-95e9-98f942d955ed" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e51f42a4-2ff7-44be-b65a-f54208e8ac1d" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_424c6ef1-4982-429f-95e9-98f942d955ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_424c6ef1-4982-429f-95e9-98f942d955ed_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_424c6ef1-4982-429f-95e9-98f942d955ed" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_424c6ef1-4982-429f-95e9-98f942d955ed_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_952f87ef-2e17-4868-944e-e13e3f00b0fc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_424c6ef1-4982-429f-95e9-98f942d955ed" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_952f87ef-2e17-4868-944e-e13e3f00b0fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_f16eb815-c8aa-4c5a-bfaa-48809e056e6f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationsHeldforsaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_952f87ef-2e17-4868-944e-e13e3f00b0fc" xlink:to="loc_us-gaap_DiscontinuedOperationsHeldforsaleMember_f16eb815-c8aa-4c5a-bfaa-48809e056e6f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8725934b-e2a2-4fb0-94ec-858cb2fb6b65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_e51f42a4-2ff7-44be-b65a-f54208e8ac1d" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8725934b-e2a2-4fb0-94ec-858cb2fb6b65" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8725934b-e2a2-4fb0-94ec-858cb2fb6b65_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8725934b-e2a2-4fb0-94ec-858cb2fb6b65" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_8725934b-e2a2-4fb0-94ec-858cb2fb6b65_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c5996f6e-0572-4129-99df-2dd014f7befb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_8725934b-e2a2-4fb0-94ec-858cb2fb6b65" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c5996f6e-0572-4129-99df-2dd014f7befb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_EWPSegmentAssetsMember_2821e263-0e9c-4194-b62c-7016d0e8c5c2" xlink:href="lpx-20230630.xsd#lpx_EWPSegmentAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_c5996f6e-0572-4129-99df-2dd014f7befb" xlink:to="loc_lpx_EWPSegmentAssetsMember_2821e263-0e9c-4194-b62c-7016d0e8c5c2" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/GoodwillandOtherIntangibleAssetsDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#GoodwillandOtherIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/GoodwillandOtherIntangibleAssetsDetails" xlink:type="extended" id="ib32511b9ff9f41249f57be143283f7fd_GoodwillandOtherIntangibleAssetsDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TimberAndTimberlands_ae4aa5ad-de24-46ed-8fc3-07cbf11f6eff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TimberAndTimberlands"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:to="loc_us-gaap_TimberAndTimberlands_ae4aa5ad-de24-46ed-8fc3-07cbf11f6eff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_42bba6b8-6d93-4c08-ad5b-ba652ffe67ef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill_42bba6b8-6d93-4c08-ad5b-ba652ffe67ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_d2ff33cf-d264-4d1b-be67-4d89e5bb8179" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_d2ff33cf-d264-4d1b-be67-4d89e5bb8179" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_b2d79a6d-eabb-4908-9e45-d9c9b343882b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_b2d79a6d-eabb-4908-9e45-d9c9b343882b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_4b4041eb-b5c1-4c34-b707-2de6677893a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:to="loc_us-gaap_Goodwill_4b4041eb-b5c1-4c34-b707-2de6677893a1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_b8bcba25-2f70-4279-848b-0f2c6a49a94a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_b8bcba25-2f70-4279-848b-0f2c6a49a94a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_4534b053-4c29-4ec7-8ee4-45c0a133b936" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_d68cdd8c-6d4c-459e-a795-ffcf1fe67df1" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_4534b053-4c29-4ec7-8ee4-45c0a133b936" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3ebd2c03-6a8d-4067-81cf-10cc9f7d115d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_4534b053-4c29-4ec7-8ee4-45c0a133b936" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3ebd2c03-6a8d-4067-81cf-10cc9f7d115d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3ebd2c03-6a8d-4067-81cf-10cc9f7d115d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3ebd2c03-6a8d-4067-81cf-10cc9f7d115d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3ebd2c03-6a8d-4067-81cf-10cc9f7d115d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_438b5350-090e-412d-a1c1-f10d2a752855" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_3ebd2c03-6a8d-4067-81cf-10cc9f7d115d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_438b5350-090e-412d-a1c1-f10d2a752855" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductiveLandMember_dc4fd687-43ab-4251-817d-43346718a498" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductiveLandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_438b5350-090e-412d-a1c1-f10d2a752855" xlink:to="loc_us-gaap_ProductiveLandMember_dc4fd687-43ab-4251-817d-43346718a498" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_c0cbc8a6-bba8-4c04-bda9-734b014d7808" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_438b5350-090e-412d-a1c1-f10d2a752855" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_c0cbc8a6-bba8-4c04-bda9-734b014d7808" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_a0c972e4-46c8-4ee8-9d2a-c3af8c5fb3fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_438b5350-090e-412d-a1c1-f10d2a752855" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_a0c972e4-46c8-4ee8-9d2a-c3af8c5fb3fa" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/CommimentsandContingenciesCommimentsandContingenciesDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#CommimentsandContingenciesCommimentsandContingenciesDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/CommimentsandContingenciesCommimentsandContingenciesDetails" xlink:type="extended" id="ia0f92b0a254b4817985ffa399bd6fb69_CommimentsandContingenciesCommimentsandContingenciesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_e0421b25-c0a1-48be-9655-9ee9f091d387" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_cf66b341-34e3-4a17-96e2-fe7382fa2811" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_e0421b25-c0a1-48be-9655-9ee9f091d387" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_cf66b341-34e3-4a17-96e2-fe7382fa2811" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_2596ad11-e011-42b7-884c-f95c9b84f395" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccrualForEnvironmentalLossContingenciesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_e0421b25-c0a1-48be-9655-9ee9f091d387" xlink:to="loc_us-gaap_AccrualForEnvironmentalLossContingenciesGross_2596ad11-e011-42b7-884c-f95c9b84f395" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_63659efe-ad5e-4b67-adf9-1fe4e9174be8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualCarryingValueCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_e0421b25-c0a1-48be-9655-9ee9f091d387" xlink:to="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_63659efe-ad5e-4b67-adf9-1fe4e9174be8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualCarryingValueNoncurrent_dd77d192-b5e7-43ae-8d29-f02f343f82b0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualCarryingValueNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_e0421b25-c0a1-48be-9655-9ee9f091d387" xlink:to="loc_us-gaap_LossContingencyAccrualCarryingValueNoncurrent_dd77d192-b5e7-43ae-8d29-f02f343f82b0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_7c2f654b-01e3-4722-a20e-bdc0db8a7404" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_e0421b25-c0a1-48be-9655-9ee9f091d387" xlink:to="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_7c2f654b-01e3-4722-a20e-bdc0db8a7404" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_0b340607-5a41-454a-add7-13c97951a912" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_e0421b25-c0a1-48be-9655-9ee9f091d387" xlink:to="loc_us-gaap_LossContingenciesTable_0b340607-5a41-454a-add7-13c97951a912" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ae6d0a7b-0796-4915-bfe4-26fc387b09d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_0b340607-5a41-454a-add7-13c97951a912" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ae6d0a7b-0796-4915-bfe4-26fc387b09d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_ae6d0a7b-0796-4915-bfe4-26fc387b09d2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ae6d0a7b-0796-4915-bfe4-26fc387b09d2" xlink:to="loc_us-gaap_LossContingencyNatureDomain_ae6d0a7b-0796-4915-bfe4-26fc387b09d2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_9167894d-02a8-4dd7-a8fb-f65e2b5b84ed" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_ae6d0a7b-0796-4915-bfe4-26fc387b09d2" xlink:to="loc_us-gaap_LossContingencyNatureDomain_9167894d-02a8-4dd7-a8fb-f65e2b5b84ed" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReserveForEnvironmentalCostsMember_8a7ca7b2-8036-4097-ac44-9af73f976ee9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReserveForEnvironmentalCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_9167894d-02a8-4dd7-a8fb-f65e2b5b84ed" xlink:to="loc_us-gaap_ReserveForEnvironmentalCostsMember_8a7ca7b2-8036-4097-ac44-9af73f976ee9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_HardboardSidingReservesMember_8f7c7634-9c5d-4980-983e-874e58cf2bb4" xlink:href="lpx-20230630.xsd#lpx_HardboardSidingReservesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_9167894d-02a8-4dd7-a8fb-f65e2b5b84ed" xlink:to="loc_lpx_HardboardSidingReservesMember_8f7c7634-9c5d-4980-983e-874e58cf2bb4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/ProductWarrantiesDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#ProductWarrantiesDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/ProductWarrantiesDetails" xlink:type="extended" id="if82184970829487d9986af9a4025965b_ProductWarrantiesDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductLiabilityContingencyLineItems_e96272b4-329e-48ee-97e6-cb129d11ccb7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductLiabilityContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_fb13400f-e79d-49c4-b5ac-48a72b3d7cdc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductLiabilityContingencyLineItems_e96272b4-329e-48ee-97e6-cb129d11ccb7" xlink:to="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_fb13400f-e79d-49c4-b5ac-48a72b3d7cdc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrual_28439350-d999-4e5a-be4e-26bdf54d013a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductWarrantyAccrual"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_fb13400f-e79d-49c4-b5ac-48a72b3d7cdc" xlink:to="loc_us-gaap_ProductWarrantyAccrual_28439350-d999-4e5a-be4e-26bdf54d013a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_e22e565b-a479-4aa8-85b7-6ad586919162" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductWarrantyAccrualWarrantiesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_fb13400f-e79d-49c4-b5ac-48a72b3d7cdc" xlink:to="loc_us-gaap_ProductWarrantyAccrualWarrantiesIssued_e22e565b-a479-4aa8-85b7-6ad586919162" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualPayments_5d6a7b8e-987b-4941-8411-edaa8091ead0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductWarrantyAccrualPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInStandardAndExtendedProductWarrantyIncreaseDecreaseRollForward_fb13400f-e79d-49c4-b5ac-48a72b3d7cdc" xlink:to="loc_us-gaap_ProductWarrantyAccrualPayments_5d6a7b8e-987b-4941-8411-edaa8091ead0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrual_a7bb77d7-7af7-49a4-b2fe-772bfd06e476" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductWarrantyAccrual"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_0b030b98-db82-4673-b33d-2010f647422a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductLiabilityContingencyLineItems_e96272b4-329e-48ee-97e6-cb129d11ccb7" xlink:to="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_0b030b98-db82-4673-b33d-2010f647422a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductWarrantyAccrualNoncurrent_0ad4238b-a63c-411d-825c-34e8ed9c230f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductWarrantyAccrualNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductLiabilityContingencyLineItems_e96272b4-329e-48ee-97e6-cb129d11ccb7" xlink:to="loc_us-gaap_ProductWarrantyAccrualNoncurrent_0ad4238b-a63c-411d-825c-34e8ed9c230f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductLiabilityContingencyTable_ecc8c0b6-81e2-474f-a412-e1667dba4a6b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProductLiabilityContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ProductLiabilityContingencyLineItems_e96272b4-329e-48ee-97e6-cb129d11ccb7" xlink:to="loc_us-gaap_ProductLiabilityContingencyTable_ecc8c0b6-81e2-474f-a412-e1667dba4a6b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5e8a927a-4d8d-4016-bcd2-1fd0a3d5cc04" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ProductLiabilityContingencyTable_ecc8c0b6-81e2-474f-a412-e1667dba4a6b" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5e8a927a-4d8d-4016-bcd2-1fd0a3d5cc04" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5e8a927a-4d8d-4016-bcd2-1fd0a3d5cc04_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5e8a927a-4d8d-4016-bcd2-1fd0a3d5cc04" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_5e8a927a-4d8d-4016-bcd2-1fd0a3d5cc04_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_330136c8-559f-44af-99a8-ad87b735cd85" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_5e8a927a-4d8d-4016-bcd2-1fd0a3d5cc04" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_330136c8-559f-44af-99a8-ad87b735cd85" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/AccumulatedComprehensiveLossDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#AccumulatedComprehensiveLossDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/AccumulatedComprehensiveLossDetails" xlink:type="extended" id="i6c71a9d47bfc4b8b945b580fdc7685b1_AccumulatedComprehensiveLossDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_ce32ce43-6d01-4a3a-92ff-3ab88f4713ed" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_757e4019-6f41-41a7-98cb-801a9017836e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ce32ce43-6d01-4a3a-92ff-3ab88f4713ed" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_757e4019-6f41-41a7-98cb-801a9017836e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_6a5c42c0-1d82-4d13-a22d-02cb5b302ff4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ce32ce43-6d01-4a3a-92ff-3ab88f4713ed" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_6a5c42c0-1d82-4d13-a22d-02cb5b302ff4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_6a55af78-315f-4617-8230-3ef94cba02ea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ce32ce43-6d01-4a3a-92ff-3ab88f4713ed" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_6a55af78-315f-4617-8230-3ef94cba02ea" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_2e658944-9700-4670-ba16-8f6a15879e2a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ce32ce43-6d01-4a3a-92ff-3ab88f4713ed" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_2e658944-9700-4670-ba16-8f6a15879e2a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_63fb9db6-5051-4449-b3ea-58e4ab552ccc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_8c158044-79c2-44ba-8c37-163809b54ae9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_ce32ce43-6d01-4a3a-92ff-3ab88f4713ed" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_8c158044-79c2-44ba-8c37-163809b54ae9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_00ecf8d8-3931-4689-8948-5c4fe390ae99" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_8c158044-79c2-44ba-8c37-163809b54ae9" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_00ecf8d8-3931-4689-8948-5c4fe390ae99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_00ecf8d8-3931-4689-8948-5c4fe390ae99_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_00ecf8d8-3931-4689-8948-5c4fe390ae99" xlink:to="loc_us-gaap_EquityComponentDomain_00ecf8d8-3931-4689-8948-5c4fe390ae99_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_908b7ae4-22b7-414a-9fc8-996f61dbafe2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_00ecf8d8-3931-4689-8948-5c4fe390ae99" xlink:to="loc_us-gaap_EquityComponentDomain_908b7ae4-22b7-414a-9fc8-996f61dbafe2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_37554fc2-eed4-4b44-bdd6-a02a874651e9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_908b7ae4-22b7-414a-9fc8-996f61dbafe2" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_37554fc2-eed4-4b44-bdd6-a02a874651e9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_e4ecccdf-ecdb-424e-b34e-52d243243667" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_908b7ae4-22b7-414a-9fc8-996f61dbafe2" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_e4ecccdf-ecdb-424e-b34e-52d243243667" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_8be36e20-9168-47a2-8398-b563842ee995" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_908b7ae4-22b7-414a-9fc8-996f61dbafe2" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_8be36e20-9168-47a2-8398-b563842ee995" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1d25b523-a8d4-41cc-a718-880955e0b1aa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_908b7ae4-22b7-414a-9fc8-996f61dbafe2" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1d25b523-a8d4-41cc-a718-880955e0b1aa" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.lpcorp.com/role/SelectedSegmentDataDetails" xlink:type="simple" xlink:href="lpx-20230630.xsd#SelectedSegmentDataDetails"/>
  <link:definitionLink xlink:role="http://www.lpcorp.com/role/SelectedSegmentDataDetails" xlink:type="extended" id="if6fcef38c61349f9a8d72eb47ea5c70f_SelectedSegmentDataDetails">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_a9f3d1d5-e1eb-4f48-9e9e-1e4bdffff445" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_Revenues_a9f3d1d5-e1eb-4f48-9e9e-1e4bdffff445" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_05e3c773-d673-40a7-921b-3bf5e8d76aa9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_ProfitLoss_05e3c773-d673-40a7-921b-3bf5e8d76aa9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_181ecb08-bc3d-4efd-bddc-e3fef25d4300" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_181ecb08-bc3d-4efd-bddc-e3fef25d4300" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_610c56ce-7051-4ff6-ba7a-a908de718bb6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_NetIncomeLoss_610c56ce-7051-4ff6-ba7a-a908de718bb6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_3c77f523-c422-4022-b1d9-e32fa44f27c6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_3c77f523-c422-4022-b1d9-e32fa44f27c6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDepreciationAndAmortization_9b2627c6-8ea9-4a25-96fb-01d7899bec34" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_OtherDepreciationAndAmortization_9b2627c6-8ea9-4a25-96fb-01d7899bec34" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_68acda9f-c8e8-4531-9903-6b3f88a5ab7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherSellingGeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_OtherSellingGeneralAndAdministrativeExpense_68acda9f-c8e8-4531-9903-6b3f88a5ab7b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_Otheroperatingincomeexpenseexclusiveofproductdiscontinuancecharges_d3ae89fd-c19b-4381-a8f8-0e2edea1f4ca" xlink:href="lpx-20230630.xsd#lpx_Otheroperatingincomeexpenseexclusiveofproductdiscontinuancecharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_lpx_Otheroperatingincomeexpenseexclusiveofproductdiscontinuancecharges_d3ae89fd-c19b-4381-a8f8-0e2edea1f4ca" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_7bfd2cd5-7757-4b6c-b7b9-67b4753bc68d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_7bfd2cd5-7757-4b6c-b7b9-67b4753bc68d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_c71de50f-ddd2-458c-a590-f9bde9fbbe5b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_InterestExpense_c71de50f-ddd2-458c-a590-f9bde9fbbe5b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_InvestmentIncomeNetOfAdjustments_85816b31-35c8-493c-b0c6-f304f64894b5" xlink:href="lpx-20230630.xsd#lpx_InvestmentIncomeNetOfAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_lpx_InvestmentIncomeNetOfAdjustments_85816b31-35c8-493c-b0c6-f304f64894b5" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OtherNonoperatingIncomeExpenseNetOfDebtExtinguishment_7d90c854-d26c-4f5a-9d52-b14c57bb16b4" xlink:href="lpx-20230630.xsd#lpx_OtherNonoperatingIncomeExpenseNetOfDebtExtinguishment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_lpx_OtherNonoperatingIncomeExpenseNetOfDebtExtinguishment_7d90c854-d26c-4f5a-9d52-b14c57bb16b4" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_b62b2350-965a-4185-8c7e-ff07176b93e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_b62b2350-965a-4185-8c7e-ff07176b93e8" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_AdjustedEBITDA_c424dc90-050a-4000-a536-466a333d9f60" xlink:href="lpx-20230630.xsd#lpx_AdjustedEBITDA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_lpx_AdjustedEBITDA_c424dc90-050a-4000-a536-466a333d9f60" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_11b32d23-5b02-40db-b0fe-654be21e95ee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_11b32d23-5b02-40db-b0fe-654be21e95ee" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperations_e84ce4bf-6ae5-458e-854d-84b2bd57e557" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperations_e84ce4bf-6ae5-458e-854d-84b2bd57e557" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_637971e8-9c35-436c-b1c8-9c4a967bd1bc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfOperatingSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_NumberOfOperatingSegments_637971e8-9c35-436c-b1c8-9c4a967bd1bc" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_56a9143b-6da8-4b65-ae37-a759b19f6dd8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_287e5eec-60db-4238-89d3-d85b2ad43fc2" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_56a9143b-6da8-4b65-ae37-a759b19f6dd8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_f9022de2-26f0-4dbb-bbc6-d446ebd4a21b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_56a9143b-6da8-4b65-ae37-a759b19f6dd8" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_f9022de2-26f0-4dbb-bbc6-d446ebd4a21b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_f9022de2-26f0-4dbb-bbc6-d446ebd4a21b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f9022de2-26f0-4dbb-bbc6-d446ebd4a21b" xlink:to="loc_us-gaap_SegmentDomain_f9022de2-26f0-4dbb-bbc6-d446ebd4a21b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_f9022de2-26f0-4dbb-bbc6-d446ebd4a21b" xlink:to="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_SidingMember_8361f653-a982-4c00-8ef1-cd1845bce213" xlink:href="lpx-20230630.xsd#lpx_SidingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:to="loc_lpx_SidingMember_8361f653-a982-4c00-8ef1-cd1845bce213" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_OsbMember_70befff9-d068-4bb2-9d7d-fad474ebbc2b" xlink:href="lpx-20230630.xsd#lpx_OsbMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:to="loc_lpx_OsbMember_70befff9-d068-4bb2-9d7d-fad474ebbc2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_EWPMember_b5c3b0d5-e1f2-4154-9231-7e6943cc3624" xlink:href="lpx-20230630.xsd#lpx_EWPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:to="loc_lpx_EWPMember_b5c3b0d5-e1f2-4154-9231-7e6943cc3624" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllOtherSegmentsMember_beb83dfe-710f-4b67-b4d6-7696173ec4b6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllOtherSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:to="loc_us-gaap_AllOtherSegmentsMember_beb83dfe-710f-4b67-b4d6-7696173ec4b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_CorporateUnallocatedMember_12cb3bb3-42eb-47e8-959a-54e6cb2cc9ec" xlink:href="lpx-20230630.xsd#lpx_CorporateUnallocatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:to="loc_lpx_CorporateUnallocatedMember_12cb3bb3-42eb-47e8-959a-54e6cb2cc9ec" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_IntersegmentMember_d4790376-93fd-49b8-a1b0-f6cc4c2638c9" xlink:href="lpx-20230630.xsd#lpx_IntersegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:to="loc_lpx_IntersegmentMember_d4790376-93fd-49b8-a1b0-f6cc4c2638c9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_LPSouthAmericaMember_4bfc8c5d-4036-4e73-a61b-633ed5a305f9" xlink:href="lpx-20230630.xsd#lpx_LPSouthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_fc2489a7-577b-4415-93fa-7c714f51b290" xlink:to="loc_lpx_LPSouthAmericaMember_4bfc8c5d-4036-4e73-a61b-633ed5a305f9" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ProducttypeAxis_23beeb0d-ff9e-48bd-8cd1-ca43d82d2ac7" xlink:href="lpx-20230630.xsd#lpx_ProducttypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_56a9143b-6da8-4b65-ae37-a759b19f6dd8" xlink:to="loc_lpx_ProducttypeAxis_23beeb0d-ff9e-48bd-8cd1-ca43d82d2ac7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ProducttypeDomain_23beeb0d-ff9e-48bd-8cd1-ca43d82d2ac7_default" xlink:href="lpx-20230630.xsd#lpx_ProducttypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_lpx_ProducttypeAxis_23beeb0d-ff9e-48bd-8cd1-ca43d82d2ac7" xlink:to="loc_lpx_ProducttypeDomain_23beeb0d-ff9e-48bd-8cd1-ca43d82d2ac7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ProducttypeDomain_3b3f4467-2f02-4282-a9eb-9afee71d91f9" xlink:href="lpx-20230630.xsd#lpx_ProducttypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_lpx_ProducttypeAxis_23beeb0d-ff9e-48bd-8cd1-ca43d82d2ac7" xlink:to="loc_lpx_ProducttypeDomain_3b3f4467-2f02-4282-a9eb-9afee71d91f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_lpx_ValueaddMember_8b971a6d-413e-4628-8844-840a1c423a7e" xlink:href="lpx-20230630.xsd#lpx_ValueaddMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_lpx_ProducttypeDomain_3b3f4467-2f02-4282-a9eb-9afee71d91f9" xlink:to="loc_lpx_ValueaddMember_8b971a6d-413e-4628-8844-840a1c423a7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_545c030b-e670-4ce7-aa80-bea368ee51dd" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_56a9143b-6da8-4b65-ae37-a759b19f6dd8" xlink:to="loc_srt_ConsolidationItemsAxis_545c030b-e670-4ce7-aa80-bea368ee51dd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_545c030b-e670-4ce7-aa80-bea368ee51dd_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_545c030b-e670-4ce7-aa80-bea368ee51dd" xlink:to="loc_srt_ConsolidationItemsDomain_545c030b-e670-4ce7-aa80-bea368ee51dd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_6850b9e4-3ead-43ff-8ad9-ae7693ff3146" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_545c030b-e670-4ce7-aa80-bea368ee51dd" xlink:to="loc_srt_ConsolidationItemsDomain_6850b9e4-3ead-43ff-8ad9-ae7693ff3146" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_8cefdf48-0259-42d5-9352-2c0af133e201" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6850b9e4-3ead-43ff-8ad9-ae7693ff3146" xlink:to="loc_us-gaap_IntersegmentEliminationMember_8cefdf48-0259-42d5-9352-2c0af133e201" xlink:type="arc" order="0"/>
  </link:definitionLink>
</link:linkbase>
