<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/seventeenafiler" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>X-17A-5</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <filerCik>0001146341</filerCik>
          <filerCcc>XXXXXXXX</filerCcc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <returnCopyFlag>true</returnCopyFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
      </flags>
    </filerInfo>
  </headerData>
  <formData>
    <submissionInformation>
      <periodBegin>01-01-2023</periodBegin>
      <periodEnd>12-31-2023</periodEnd>
      <typeOfRegistrant>
        <typeOfBDRegistrant>Broker-dealer</typeOfBDRegistrant>
      </typeOfRegistrant>
      <materialWeakness>N</materialWeakness>
    </submissionInformation>
    <registrantIdentification>
      <brokerDealerName>CHATHAM FINANCIAL SECURITIES LLC</brokerDealerName>
      <businessAddress>
        <com:street1>263 TRESSER BOULEVARD</com:street1>
        <com:street2>9TH FLOOR</com:street2>
        <com:city>STAMFORD</com:city>
        <com:stateOrCountry>CT</com:stateOrCountry>
        <com:zipCode>06901</com:zipCode>
      </businessAddress>
      <contactPersonName>Joe Hoban</contactPersonName>
      <contactPersonPhoneNumber>646-415-6143</contactPersonPhoneNumber>
    </registrantIdentification>
    <accountantIdentification>
      <accountantName>Marcum LLP</accountantName>
      <accountantAddress>
        <com:street1>9 Parkway North</com:street1>
        <com:street2>Suite 200</com:street2>
        <com:city>Deerfield</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60015</com:zipCode>
      </accountantAddress>
      <accountantType>Certified Public Accountant</accountantType>
    </accountantIdentification>
    <oathSignature>
      <signPersonName>Joe Hoban</signPersonName>
      <entityName>CHATHAM FINANCIAL SECURITIES LLC</entityName>
      <signDate>12-31-2023</signDate>
      <signature>Joe Hoban</signature>
      <oathTitle>CFO</oathTitle>
      <confirmNotarizedFlag>Y</confirmNotarizedFlag>
    </oathSignature>
  </formData>
</edgarSubmission>
