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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2023 Workiva-->
<!--r:72742aaa-4a79-4c48-833c-a020a1d89623,g:50757174-674f-46b6-bd24-0934e8fc6c5b-->
<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://pwp.com/role/Cover" xlink:type="simple" xlink:href="pwp-20230504.xsd#Cover"/>
  <link:presentationLink xlink:role="http://pwp.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_d5fe154f-909c-4a79-995f-50d3d0191952" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_DocumentType_d5fe154f-909c-4a79-995f-50d3d0191952" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_97467baf-509c-4398-9901-6aec84ccfc86" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_DocumentPeriodEndDate_97467baf-509c-4398-9901-6aec84ccfc86" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_88ee1e94-4cd8-4f47-92be-d8c7b59e8a91" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityFileNumber_88ee1e94-4cd8-4f47-92be-d8c7b59e8a91" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_b4c9f65d-0d05-4906-8c21-f7ae7caadc4f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityRegistrantName_b4c9f65d-0d05-4906-8c21-f7ae7caadc4f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_177f6727-60e3-45aa-b23d-53d6a50f7f9c" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityIncorporationStateCountryCode_177f6727-60e3-45aa-b23d-53d6a50f7f9c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_57a9cce6-81da-4c97-8261-6a0358a3ccae" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityTaxIdentificationNumber_57a9cce6-81da-4c97-8261-6a0358a3ccae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_1cb0acb5-f6b7-401f-9d95-3b507ab27ae8" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityAddressAddressLine1_1cb0acb5-f6b7-401f-9d95-3b507ab27ae8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_e78eb598-378e-458d-9ea0-70511a072dc4" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityAddressCityOrTown_e78eb598-378e-458d-9ea0-70511a072dc4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_60960254-c2be-41aa-b0f8-231fa99445c1" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityAddressStateOrProvince_60960254-c2be-41aa-b0f8-231fa99445c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_cea2f7bb-7363-42e8-8b5a-ef7303d09a24" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityAddressPostalZipCode_cea2f7bb-7363-42e8-8b5a-ef7303d09a24" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_6fe51c60-c694-4d49-bfb7-26982277451f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_CityAreaCode_6fe51c60-c694-4d49-bfb7-26982277451f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_a9fc16c1-7d24-4efe-a7da-eaba0c4a83ed" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_LocalPhoneNumber_a9fc16c1-7d24-4efe-a7da-eaba0c4a83ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_6c584bd1-7267-4583-9ea7-b6623715194f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_WrittenCommunications_6c584bd1-7267-4583-9ea7-b6623715194f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_4dabaad5-b8cd-46ab-8761-53ba1f7a5c7f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_SolicitingMaterial_4dabaad5-b8cd-46ab-8761-53ba1f7a5c7f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_3b60b2eb-1d99-4029-8fc3-fba9e477bfaf" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_PreCommencementTenderOffer_3b60b2eb-1d99-4029-8fc3-fba9e477bfaf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_bef78302-61b5-4f77-b03e-e2905115db07" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_bef78302-61b5-4f77-b03e-e2905115db07" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_0228da8e-27a9-4d12-948f-58f2ef1bbbbc" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_Security12bTitle_0228da8e-27a9-4d12-948f-58f2ef1bbbbc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_fc035760-7a7a-4663-9a3e-acdfc55af36f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_TradingSymbol_fc035760-7a7a-4663-9a3e-acdfc55af36f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_45329d47-158f-4db0-a58e-13310271a114" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_SecurityExchangeName_45329d47-158f-4db0-a58e-13310271a114" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_3e3279e2-57c5-45c7-a45f-ddd8be2f522f" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityEmergingGrowthCompany_3e3279e2-57c5-45c7-a45f-ddd8be2f522f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_0b0abfe3-9b2e-436e-82be-7a5045312268" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityExTransitionPeriod"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityExTransitionPeriod_0b0abfe3-9b2e-436e-82be-7a5045312268" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_f91a827a-7638-4ff5-9c2b-3e89e7a3e2a2" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_EntityCentralIndexKey_f91a827a-7638-4ff5-9c2b-3e89e7a3e2a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_4ad39b6a-ba6d-4786-9e3e-e6a8734c2bfa" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_234e574f-b1b7-4e0d-a4da-c217f02173c8" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_ebc890c2-3e3f-4c62-89cb-7c0698e0663a" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_08d2ff08-ede7-4e07-93cf-1e8eee12028f" xlink:to="loc_dei_AmendmentFlag_ebc890c2-3e3f-4c62-89cb-7c0698e0663a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
