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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019dcf87-e2be-7f08-b9a2-5e59b1a3c848,g:04f77ef7-1ad5-4e15-91ce-49184668d957-->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.westlake.com/role/CoverPage" xlink:type="simple" xlink:href="wlk-20260505.xsd#CoverPage"/>
  <link:presentationLink xlink:role="http://www.westlake.com/role/CoverPage" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019dcf87-e2be-7053-942f-6b7aa27229a5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019dcf87-e2be-7a20-ab10-faaf0d7ddfc6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dcf87-e2be-7053-942f-6b7aa27229a5" xlink:to="loc_dei_DocumentInformationTable_019dcf87-e2be-7a20-ab10-faaf0d7ddfc6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_019dcf87-e2be-7821-918b-4e9491a6d5a7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementClassOfStockAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019dcf87-e2be-7a20-ab10-faaf0d7ddfc6" xlink:to="loc_us-gaap_StatementClassOfStockAxis_019dcf87-e2be-7821-918b-4e9491a6d5a7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_019dcf87-e2be-737c-9ec9-a877f9ddc54b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_019dcf87-e2be-7821-918b-4e9491a6d5a7" xlink:to="loc_us-gaap_ClassOfStockDomain_019dcf87-e2be-737c-9ec9-a877f9ddc54b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019dcf87-e2be-7906-8642-227b9ce3fee7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockMember"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_019dcf87-e2be-737c-9ec9-a877f9ddc54b" xlink:to="loc_us-gaap_CommonStockMember_019dcf87-e2be-7906-8642-227b9ce3fee7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_wlk_OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain_019dcf87-e2be-7ac4-90d8-37cef2dd0e3d" xlink:href="wlk-20260505.xsd#wlk_OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_019dcf87-e2be-737c-9ec9-a877f9ddc54b" xlink:to="loc_wlk_OnePointSixTwoFivePercentageSeniorNotesDueTwentyTwentyNineMemberDomain_019dcf87-e2be-7ac4-90d8-37cef2dd0e3d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019dcf87-e2be-7a20-ab10-faaf0d7ddfc6" xlink:to="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019dcf87-e2be-73eb-a673-7d59379a8442" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_DocumentType_019dcf87-e2be-73eb-a673-7d59379a8442" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019dcf87-e2be-7878-a0c0-fb03c9bab7a6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_DocumentPeriodEndDate_019dcf87-e2be-7878-a0c0-fb03c9bab7a6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019dcf87-e2be-795a-b9d1-4982efb2ecca" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityRegistrantName_019dcf87-e2be-795a-b9d1-4982efb2ecca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019dcf87-e2be-7e92-896a-726b9b05ed0e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019dcf87-e2be-7e92-896a-726b9b05ed0e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019dcf87-e2be-7ed6-a168-72d7fe892cc3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityFileNumber_019dcf87-e2be-7ed6-a168-72d7fe892cc3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019dcf87-e2be-7c4f-9771-a46a106b2430" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityTaxIdentificationNumber_019dcf87-e2be-7c4f-9771-a46a106b2430" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019dcf87-e2be-7881-98b3-33777d3d0cd6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityAddressAddressLine1_019dcf87-e2be-7881-98b3-33777d3d0cd6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019dcf87-e2be-706a-8d7a-d667dbc53406" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityAddressAddressLine2_019dcf87-e2be-706a-8d7a-d667dbc53406" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019dcf87-e2be-771c-8ef7-84a1316ea56a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityAddressCityOrTown_019dcf87-e2be-771c-8ef7-84a1316ea56a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019dcf87-e2be-716a-8cef-bd9840bbdc41" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityAddressStateOrProvince_019dcf87-e2be-716a-8cef-bd9840bbdc41" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019dcf87-e2be-7ff3-a166-4d1239ae8cc6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityAddressPostalZipCode_019dcf87-e2be-7ff3-a166-4d1239ae8cc6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019dcf87-e2be-7dff-b766-2a513d64dbc8" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_CityAreaCode_019dcf87-e2be-7dff-b766-2a513d64dbc8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019dcf87-e2be-7ab7-8886-8e3e410ec03d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_LocalPhoneNumber_019dcf87-e2be-7ab7-8886-8e3e410ec03d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019dcf87-e2be-7828-adde-38a2e14081a1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_WrittenCommunications_019dcf87-e2be-7828-adde-38a2e14081a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019dcf87-e2be-7c6c-be88-e22ad1d1b058" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_SolicitingMaterial_019dcf87-e2be-7c6c-be88-e22ad1d1b058" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019dcf87-e2be-77d8-95d9-b3dc0b3a3522" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_PreCommencementTenderOffer_019dcf87-e2be-77d8-95d9-b3dc0b3a3522" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019dcf87-e2be-7e60-a39e-06aba3f81a45" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019dcf87-e2be-7e60-a39e-06aba3f81a45" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019dcf87-e2be-75c7-ad37-f8623279acf6" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_Security12bTitle_019dcf87-e2be-75c7-ad37-f8623279acf6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019dcf87-e2be-7ca8-ae75-bb4cc6010cd2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_TradingSymbol_019dcf87-e2be-7ca8-ae75-bb4cc6010cd2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019dcf87-e2be-7b6b-a092-2ac54502afc4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_SecurityExchangeName_019dcf87-e2be-7b6b-a092-2ac54502afc4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019dcf87-e2be-7c9b-82ff-e18bcbe70599" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityEmergingGrowthCompany_019dcf87-e2be-7c9b-82ff-e18bcbe70599" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019dcf87-e2be-7225-ba0e-3fc7c86a0bae" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_AmendmentFlag_019dcf87-e2be-7225-ba0e-3fc7c86a0bae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019dcf87-e2be-7562-9081-1c8579eb6922" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019dcf87-e2be-79d5-b89b-7333d0a715eb" xlink:to="loc_dei_EntityCentralIndexKey_019dcf87-e2be-7562-9081-1c8579eb6922" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
