<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/thirteenffiler" xmlns:com="http://www.sec.gov/edgar/common">
  <schemaVersion>X0202</schemaVersion>
  <headerData>
    <submissionType>13F-HR</submissionType>
    <filerInfo>
      <liveTestFlag>LIVE</liveTestFlag>
      <flags>
        <confirmingCopyFlag>false</confirmingCopyFlag>
        <returnCopyFlag>false</returnCopyFlag>
        <overrideInternetFlag>false</overrideInternetFlag>
      </flags>
      <filer>
        <credentials>
          <cik>0000019481</cik>
          <ccc>XXXXXXXX</ccc>
        </credentials>
      </filer>
      <periodOfReport>12-31-2025</periodOfReport>
    </filerInfo>
  </headerData>
  <formData>
    <coverPage>
      <reportCalendarOrQuarter>12-31-2025</reportCalendarOrQuarter>
      <filingManager>
        <name>Virtus Investment Advisers, LLC</name>
        <address>
          <com:street1>ONE FINANCIAL PLAZA</com:street1>
          <com:street2>26TH FLOOR</com:street2>
          <com:city>HARTFORD</com:city>
          <com:stateOrCountry>CT</com:stateOrCountry>
          <com:zipCode>06103</com:zipCode>
        </address>
      </filingManager>
      <reportType>13F COMBINATION REPORT</reportType>
      <form13FFileNumber>028-00085</form13FFileNumber>
      <crdNumber>000106982</crdNumber>
      <secFileNumber>801-5995</secFileNumber>
      <otherManagersInfo>
        <otherManager>
          <cik>0000765443</cik>
          <form13FFileNumber>028-01420</form13FFileNumber>
          <crdNumber>000107296</crdNumber>
          <name>DUFF &amp; PHELPS INVESTMENT MANAGEMENT CO</name>
        </otherManager>
        <otherManager>
          <cik>0001021223</cik>
          <form13FFileNumber>028-05792</form13FFileNumber>
          <crdNumber>000104599</crdNumber>
          <name>KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001290668</cik>
          <form13FFileNumber>028-11076</form13FFileNumber>
          <crdNumber>000127447</crdNumber>
          <name>Sustainable Growth Advisers, LP</name>
        </otherManager>
        <otherManager>
          <cik>0001862664</cik>
          <form13FFileNumber>028-21243</form13FFileNumber>
          <crdNumber>000310902</crdNumber>
          <name>NFJ INVESTMENT GROUP, LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001512805</cik>
          <form13FFileNumber>028-14257</form13FFileNumber>
          <crdNumber>000155686</crdNumber>
          <name>Westchester Capital Management, LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001738728</cik>
          <form13FFileNumber>028-18744</form13FFileNumber>
          <crdNumber>000146025</crdNumber>
          <name>Silvant Capital Management LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001068837</cik>
          <form13FFileNumber>028-07292</form13FFileNumber>
          <crdNumber>000108934</crdNumber>
          <name>VOYA INVESTMENT MANAGEMENT LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001276918</cik>
          <form13FFileNumber>028-10622</form13FFileNumber>
          <crdNumber>000128990</crdNumber>
          <name>ZEVENBERGEN CAPITAL INVESTMENTS LLC</name>
        </otherManager>
        <otherManager>
          <cik>0001738726</cik>
          <form13FFileNumber>028-18745</form13FFileNumber>
          <crdNumber>000146023</crdNumber>
          <name>Ceredex Value Advisors LLC</name>
        </otherManager>
        <otherManager>
          <cik>0002079921</cik>
          <form13FFileNumber>028-25715</form13FFileNumber>
          <crdNumber>000146029</crdNumber>
          <name>Virtus Fixed Income Advisers, LLC</name>
        </otherManager>
        <otherManager>
          <cik>0000740913</cik>
          <form13FFileNumber>028-01347</form13FFileNumber>
          <crdNumber>000003140</crdNumber>
          <secFileNumber>801-13457</secFileNumber>
          <name>REAVES W H &amp; CO INC</name>
        </otherManager>
        <otherManager>
          <cik>0001621802</cik>
          <form13FFileNumber>028-17986</form13FFileNumber>
          <crdNumber>000166459</crdNumber>
          <secFileNumber>801-79940</secFileNumber>
          <name>INFRASTRUCTURE CAPITAL ADVISORS, LLC</name>
        </otherManager>
      </otherManagersInfo>
      <provideInfoForInstruction5>N</provideInfoForInstruction5>
    </coverPage>
    <signatureBlock>
      <name>Chetram Persaud</name>
      <title>Chief Compliance Officer</title>
      <phone>646-376-5905</phone>
      <signature>Chetram Persaud</signature>
      <city>Hartford</city>
      <stateOrCountry>CT</stateOrCountry>
      <signatureDate>02-17-2026</signatureDate>
    </signatureBlock>
    <summaryPage>
      <otherIncludedManagersCount>0</otherIncludedManagersCount>
      <tableEntryTotal>461</tableEntryTotal>
      <tableValueTotal>367934331</tableValueTotal>
      <isConfidentialOmitted>false</isConfidentialOmitted>
    </summaryPage>
  </formData>
</edgarSubmission>
