<?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>0001051487</filerCik>
          <filerCcc>XXXXXXXX</filerCcc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <returnCopyFlag>false</returnCopyFlag>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
      </flags>
    </filerInfo>
  </headerData>
  <formData>
    <submissionInformation>
      <periodBegin>01-01-2025</periodBegin>
      <periodEnd>12-31-2025</periodEnd>
      <typeOfRegistrant>
        <typeOfBDRegistrant>Broker-dealer</typeOfBDRegistrant>
      </typeOfRegistrant>
      <materialWeakness>N</materialWeakness>
    </submissionInformation>
    <registrantIdentification>
      <brokerDealerName>FIRST CITIZENS INVESTOR SERVICES, INC.</brokerDealerName>
      <businessAddress>
        <com:street1>8540 COLONNADE CENTER DRIVE</com:street1>
        <com:city>RALEIGH</com:city>
        <com:stateOrCountry>NC</com:stateOrCountry>
        <com:zipCode>27615</com:zipCode>
      </businessAddress>
      <contactPersonName>Ben Wagland</contactPersonName>
      <contactPersonPhoneNumber>919-716-7391</contactPersonPhoneNumber>
    </registrantIdentification>
    <accountantIdentification>
      <accountantName>Cherry Bekaert, LLP</accountantName>
      <accountantAddress>
        <com:street1>3800 Glenwood Avenue</com:street1>
        <com:city>Raleigh</com:city>
        <com:stateOrCountry>NC</com:stateOrCountry>
        <com:zipCode>27612</com:zipCode>
      </accountantAddress>
      <accountantType>Certified Public Accountant</accountantType>
    </accountantIdentification>
    <oathSignature>
      <signPersonName>David Biliter</signPersonName>
      <entityName>FIRST CITIZENS INVESTOR SERVICES, INC.</entityName>
      <signDate>12-31-2025</signDate>
      <signature>David Biliter</signature>
      <oathTitle>President</oathTitle>
    </oathSignature>
  </formData>
</edgarSubmission>
