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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e4af4-c264-77c6-be4d-56da94d62c12,g:92ad2fb4-cf2c-402e-a4f3-0d95a8caf9d1-->
<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://bayfirstfinancial.com/role/Cover" xlink:type="simple" xlink:href="bafn-20260630.xsd#Cover"/>
  <link:presentationLink xlink:role="http://bayfirstfinancial.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019e4af4-c264-7a87-8f31-874ef6eafb97" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_DocumentType_019e4af4-c264-7a87-8f31-874ef6eafb97" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019e4af4-c264-7150-a927-8e5afc8869fa" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_DocumentPeriodEndDate_019e4af4-c264-7150-a927-8e5afc8869fa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019e4af4-c264-7238-ab83-019e09f89863" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityRegistrantName_019e4af4-c264-7238-ab83-019e09f89863" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019e4af4-c264-78b4-b0c0-95a9c815f26b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019e4af4-c264-78b4-b0c0-95a9c815f26b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019e4af4-c264-71ef-8bce-476375247421" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityFileNumber_019e4af4-c264-71ef-8bce-476375247421" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019e4af4-c264-7274-9421-89f83516c00a" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityTaxIdentificationNumber_019e4af4-c264-7274-9421-89f83516c00a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019e4af4-c264-793d-a1fe-04fef1de873e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityAddressAddressLine1_019e4af4-c264-793d-a1fe-04fef1de873e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019e4af4-c264-7aba-ba03-cb18535f1bad" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityAddressCityOrTown_019e4af4-c264-7aba-ba03-cb18535f1bad" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019e4af4-c264-7289-8762-d9736674750e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityAddressStateOrProvince_019e4af4-c264-7289-8762-d9736674750e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019e4af4-c264-7703-97da-9be820779e4d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityAddressPostalZipCode_019e4af4-c264-7703-97da-9be820779e4d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019e4af4-c264-7a2f-ac3b-5e4008b3aee6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_CityAreaCode_019e4af4-c264-7a2f-ac3b-5e4008b3aee6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019e4af4-c264-72dd-aa72-ec55232ad358" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_LocalPhoneNumber_019e4af4-c264-72dd-aa72-ec55232ad358" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019e4af4-c264-7153-8868-6daf0630af4c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_WrittenCommunications_019e4af4-c264-7153-8868-6daf0630af4c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019e4af4-c264-7935-bb35-7376b473be1f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_SolicitingMaterial_019e4af4-c264-7935-bb35-7376b473be1f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019e4af4-c264-7b8e-b2de-5ad86b1be65c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_PreCommencementTenderOffer_019e4af4-c264-7b8e-b2de-5ad86b1be65c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019e4af4-c264-7037-b854-b685d76be605" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019e4af4-c264-7037-b854-b685d76be605" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019e4af4-c264-7ad9-9a0d-ceae090b7927" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_Security12bTitle_019e4af4-c264-7ad9-9a0d-ceae090b7927" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019e4af4-c264-77b1-9883-0f6ae6bdd5d4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_TradingSymbol_019e4af4-c264-77b1-9883-0f6ae6bdd5d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019e4af4-c264-71c9-80fc-53c830129d93" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_SecurityExchangeName_019e4af4-c264-71c9-80fc-53c830129d93" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019e4af4-c264-703e-8f0d-3d57ff073bef" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityEmergingGrowthCompany_019e4af4-c264-703e-8f0d-3d57ff073bef" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_019e4af4-c264-7a21-a934-f52b5d195626" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityExTransitionPeriod"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityExTransitionPeriod_019e4af4-c264-7a21-a934-f52b5d195626" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019e4af4-c264-7ab9-b092-7492789ab531" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_EntityCentralIndexKey_019e4af4-c264-7ab9-b092-7492789ab531" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019e4af4-c264-72db-b934-a92ac71cdfe0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019e4af4-c264-77b4-800b-67f80a2ac03d" xlink:to="loc_dei_AmendmentFlag_019e4af4-c264-72db-b934-a92ac71cdfe0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
