<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001243706</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001174850</issuerCik>
      <issuerName>NICOLET BANKSHARES INC</issuerName>
      <secFileNumber>001-37700</secFileNumber>
      <issuerAddress>
        <com:street1>111 N WASHINGTON ST</com:street1>
        <com:city>GREEN BAY</com:city>
        <com:stateOrCountry>WI</com:stateOrCountry>
        <com:zipCode>54301</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>920 430 1400</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>DANIELS MICHAEL E</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Fidelity Brokerage Services LLC</name>
        <address>
          <com:street1>900 Salem Street</com:street1>
          <com:city>Smithfield</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>4869</noOfUnitsSold>
      <aggregateMarketValue>559935.00</aggregateMarketValue>
      <noOfUnitsOutstanding>15211674</noOfUnitsOutstanding>
      <approxSaleDate>11/11/2024</approxSaleDate>
      <securitiesExchangeName>NYSE</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>11/11/2024</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted- 05/16/2017</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>4869</amountOfSecuritiesAcquired>
      <paymentDate>11/11/2024</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Daniels</name>
        <address>
          <com:street1>111 North Washington Street</com:street1>
          <com:city>Green Bay</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>54301</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/26/2024</saleDate>
      <amountOfSecuritiesSold>1289</amountOfSecuritiesSold>
      <grossProceeds>127530.18</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Daniels</name>
        <address>
          <com:street1>111 North Washington Street</com:street1>
          <com:city>Green Bay</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>54301</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/28/2024</saleDate>
      <amountOfSecuritiesSold>1321</amountOfSecuritiesSold>
      <grossProceeds>130666.85</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Daniels</name>
        <address>
          <com:street1>111 North Washington Street</com:street1>
          <com:city>Green Bay</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>54301</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/29/2024</saleDate>
      <amountOfSecuritiesSold>8003</amountOfSecuritiesSold>
      <grossProceeds>792113.73</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Daniels</name>
        <address>
          <com:street1>111 North Washington Street</com:street1>
          <com:city>Green Bay</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>54301</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>08/30/2024</saleDate>
      <amountOfSecuritiesSold>10316</amountOfSecuritiesSold>
      <grossProceeds>1021043.64</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Daniels</name>
        <address>
          <com:street1>111 North Washington Street</com:street1>
          <com:city>Green Bay</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>54301</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>10/23/2024</saleDate>
      <amountOfSecuritiesSold>29071</amountOfSecuritiesSold>
      <grossProceeds>2938612.96</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Michael Daniels</name>
        <address>
          <com:street1>111 North Washington Street</com:street1>
          <com:city>Green Bay</com:city>
          <com:stateOrCountry>WI</com:stateOrCountry>
          <com:zipCode>54301</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>11/06/2024</saleDate>
      <amountOfSecuritiesSold>63551</amountOfSecuritiesSold>
      <grossProceeds>6766563.74</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>11/12/2024</noticeDate>
      <signature>/s/ Tyler Johnson, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Michael Daniels</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
