content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:ns2="http://www.sec.gov/edgar/common">
      <headerData>
          <submissionType>144</submissionType>
          <filerInfo>
              <filer>
                  <filerCredentials>
                      <cik>0002000932</cik>
                      <ccc>XXXXXXXX</ccc>
                  </filerCredentials>
              </filer>
              <liveTestFlag>LIVE</liveTestFlag>
  
  
  
          </filerInfo>
      </headerData>
      <formData>
          <issuerInfo>
              <issuerCik>0001288847</issuerCik>
              <issuerName>FIVE9 INC COM</issuerName>
              <secFileNumber>001-36383</secFileNumber>
              <issuerAddress>
                  <ns2:street1>3001 Bishop Drive, Suite 350  </ns2:street1>
                  <ns2:city>San Ramon</ns2:city>
                  <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                  <ns2:zipCode>94583</ns2:zipCode>
              </issuerAddress>
              <issuerContactPhone>9252012000</issuerContactPhone>
              <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>ANDREW DIGNAN</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
              <relationshipsToIssuer>
                  <relationshipToIssuer>Officer</relationshipToIssuer>
              </relationshipsToIssuer>
          </issuerInfo>
          <securitiesInformation>
              <securitiesClassTitle>COMMON</securitiesClassTitle>
              <brokerOrMarketmakerDetails>
                  <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                  <address>
                      <ns2:street1>1 New York Plaza</ns2:street1>
                      <ns2:street2>8th Floor</ns2:street2>
                      <ns2:city>New York</ns2:city>
                      <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                      <ns2:zipCode>10004</ns2:zipCode>
                  </address>
              </brokerOrMarketmakerDetails>
              <noOfUnitsSold>7340</noOfUnitsSold>
              <aggregateMarketValue>429390.00</aggregateMarketValue>
              <noOfUnitsOutstanding>73326608</noOfUnitsOutstanding>
              <approxSaleDate>03/08/2024</approxSaleDate>
              <securitiesExchangeName>NASDAQ</securitiesExchangeName>
          </securitiesInformation>
          <securitiesToBeSold>
              <securitiesClassTitle>Common</securitiesClassTitle>
              <acquiredDate>03/03/2024</acquiredDate>
              <natureOfAcquisitionTransaction>Restricted Stock Units</natureOfAcquisitionTransaction>
              <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
              <isGiftTransaction>N</isGiftTransaction>
              <amountOfSecuritiesAcquired>7340</amountOfSecuritiesAcquired>
              <paymentDate>03/03/2024</paymentDate>
              <natureOfPayment>N/A</natureOfPayment>
          </securitiesToBeSold>
          <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
          <securitiesSoldInPast3Months>
              <sellerDetails>
                  <name>ANDREW DIGNAN </name>
                  <address>
                      <ns2:street1>3001 Bishop Drive, Suite 350  </ns2:street1>
                      <ns2:city>San Ramon</ns2:city>
                      <ns2:stateOrCountry>CA</ns2:stateOrCountry>
                      <ns2:zipCode>94583</ns2:zipCode>
                  </address>
              </sellerDetails>
              <securitiesClassTitle>Common</securitiesClassTitle>
              <saleDate>03/05/2024</saleDate>
              <amountOfSecuritiesSold>3670</amountOfSecuritiesSold>
              <grossProceeds>216750.20</grossProceeds>
          </securitiesSoldInPast3Months>
          <remarks>Sale that was executed on March 6, 2024 is being reported on this Form 144 filed on March 8 ,2024.</remarks>
          <noticeSignature>
              <noticeDate>03/08/2024</noticeDate>
              <planAdoptionDates>
                  <planAdoptionDate>09/07/2023</planAdoptionDate>
              </planAdoptionDates>
              <signature>/s/ Andrew Dignan</signature>
          </noticeSignature>
      </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4130}]
text: 144
  0002000932
  XXXXXXXX
  LIVE
  0001288847
  FIVE9 INC COM
  001-36383
  3001 Bishop Drive, Suite 350
  San Ramon
  CA
  94583
  9252012000
  ANDREW DIGNAN
  Officer
  COMMON
  Morgan Stanley Smith Barney LLC Executive Financial Services
  1 New York Plaza
  8th Floor
  New York
  NY
  10004
  7340
  429390.00
  73326608
  03/08/2024
  NASDAQ
  Common
  03/03/2024
  Restricted Stock Units
  Issuer
  N
  7340
  03/03/2024
  N/A
  N
  ANDREW DIGNAN
  3001 Bishop Drive, Suite 350
  San Ramon
  CA
  94583
  Common
  03/05/2024
  3670
  216750.20
  Sale that was executed on March 6, 2024 is being reported on this Form 144 filed on March 8 ,2024.
  03/08/2024
  09/07/2023
  /s/ Andrew Dignan