<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001629546</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000909108</issuerCik>
      <issuerName>DIAMOND HILL INVESTMENT GROUP INC</issuerName>
      <secFileNumber>000-24498</secFileNumber>
      <issuerAddress>
        <com:street1>325 JOHN H MCCONNELL BLVD</com:street1>
        <com:street2>SUITE 200</com:street2>
        <com:city>COLUMBUS</com:city>
        <com:stateOrCountry>OH</com:stateOrCountry>
        <com:zipCode>43215</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>6142553333</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Line Thomas Edward</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab Corporation</name>
        <address>
          <com:street1>3000 Schwab Way</com:street1>
          <com:city>Westlake</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>76262</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>4000</noOfUnitsSold>
      <aggregateMarketValue>620280.00</aggregateMarketValue>
      <noOfUnitsOutstanding>2772890</noOfUnitsOutstanding>
      <approxSaleDate>05/13/2024</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>12/31/2014</acquiredDate>
      <natureOfAcquisitionTransaction>Employee Compensation</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>16451</amountOfSecuritiesAcquired>
      <paymentDate>12/31/2014</paymentDate>
      <natureOfPayment>Equity Compensation</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>Table I acquisition and payment date range: 12/31/2014 to 02/16/2024</remarks>
    <noticeSignature>
      <noticeDate>05/13/2024</noticeDate>
      <signature>TOM LINE</signature>
    </noticeSignature>
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144
0001629546
XXXXXXXX
LIVE
0000909108
DIAMOND HILL INVESTMENT GROUP INC
000-24498
325 JOHN H MCCONNELL BLVD
SUITE 200
COLUMBUS
OH
43215
6142553333
Line Thomas Edward
Officer
Common
Charles Schwab Corporation
3000 Schwab Way
Westlake
TX
76262
4000
620280.00
2772890
05/13/2024
Nasdaq
Common
12/31/2014
Employee Compensation
Issuer
N
16451
12/31/2014
Equity Compensation
Y
Table I acquisition and payment date range: 12/31/2014 to 02/16/2024
05/13/2024
TOM LINE