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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a0248e-6f0e-7b18-8c8f-1d8ca338d0b9,g:784421e1-9717-4123-a4a9-8dc81cf69c6d-->
<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-20261029.xsd#Cover"/>
  <link:presentationLink xlink:role="http://bayfirstfinancial.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a0248e-6f0e-7ddb-adf4-8e961ec859a8" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_DocumentType_01a0248e-6f0e-7ddb-adf4-8e961ec859a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_01a0248e-6f0e-7ea7-aa70-0e3c364b12d4" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_DocumentPeriodEndDate_01a0248e-6f0e-7ea7-aa70-0e3c364b12d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a0248e-6f0e-7303-9114-d2e3c409cbfd" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityRegistrantName_01a0248e-6f0e-7303-9114-d2e3c409cbfd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_01a0248e-6f0e-79e7-a4d0-91b3f86534db" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityIncorporationStateCountryCode_01a0248e-6f0e-79e7-a4d0-91b3f86534db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_01a0248e-6f0e-72f7-8fd1-ca2fd5ded84b" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityFileNumber_01a0248e-6f0e-72f7-8fd1-ca2fd5ded84b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_01a0248e-6f0e-7e6b-8980-4b296a504197" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityTaxIdentificationNumber_01a0248e-6f0e-7e6b-8980-4b296a504197" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a0248e-6f0e-7b39-8251-cbc7d6dab6ce" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityAddressAddressLine1_01a0248e-6f0e-7b39-8251-cbc7d6dab6ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a0248e-6f0e-7202-8601-ad84b3f3c8e8" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityAddressCityOrTown_01a0248e-6f0e-7202-8601-ad84b3f3c8e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a0248e-6f0e-7bd5-8fc5-5f1abba081f0" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityAddressStateOrProvince_01a0248e-6f0e-7bd5-8fc5-5f1abba081f0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a0248e-6f0e-7c8d-b4d6-4102bb9aa89c" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityAddressPostalZipCode_01a0248e-6f0e-7c8d-b4d6-4102bb9aa89c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a0248e-6f0e-7d3d-94ac-de40ba6f2300" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_CityAreaCode_01a0248e-6f0e-7d3d-94ac-de40ba6f2300" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a0248e-6f0e-7849-8dba-86b50d8843a4" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_LocalPhoneNumber_01a0248e-6f0e-7849-8dba-86b50d8843a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_01a0248e-6f0e-7434-9542-3d59ada4265a" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_WrittenCommunications_01a0248e-6f0e-7434-9542-3d59ada4265a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_01a0248e-6f0e-7540-ad1d-f72ce04973a5" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_SolicitingMaterial_01a0248e-6f0e-7540-ad1d-f72ce04973a5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_01a0248e-6f0e-78df-87f5-8762d9de8301" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_PreCommencementTenderOffer_01a0248e-6f0e-78df-87f5-8762d9de8301" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_01a0248e-6f0e-796e-8c7f-eb841285cbc6" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_01a0248e-6f0e-796e-8c7f-eb841285cbc6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_01a0248e-6f0e-72ff-a6fd-e0ffc4674280" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_Security12bTitle_01a0248e-6f0e-72ff-a6fd-e0ffc4674280" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_01a0248e-6f0e-7651-a20a-8aa924a0af60" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_TradingSymbol_01a0248e-6f0e-7651-a20a-8aa924a0af60" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_01a0248e-6f0e-7285-86dc-fffcbeb5f150" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_SecurityExchangeName_01a0248e-6f0e-7285-86dc-fffcbeb5f150" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a0248e-6f0e-7390-a414-3c93b978a5fa" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a0248e-6f0e-7390-a414-3c93b978a5fa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_01a0248e-6f0e-732b-8e07-615860a16966" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityExTransitionPeriod_01a0248e-6f0e-732b-8e07-615860a16966" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a0248e-6f0e-726d-ab30-cd65281032c1" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_EntityCentralIndexKey_01a0248e-6f0e-726d-ab30-cd65281032c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a0248e-6f0e-7e7e-b746-e0d32d9e366d" 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_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_AmendmentFlag_01a0248e-6f0e-7e7e-b746-e0d32d9e366d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_01a0248e-6f0e-79e7-b10d-0356c22cf2dd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0248e-6f0e-758b-898a-585b08457eb2" xlink:to="loc_dei_CurrentFiscalYearEndDate_01a0248e-6f0e-79e7-b10d-0356c22cf2dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
