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      <liveTestFlag>LIVE</liveTestFlag>



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    <issuerInfo>
      <issuerCik>0001097149</issuerCik>
      <issuerName>ALIGN TECHNOLOGY INC</issuerName>
      <secFileNumber>000-32259</secFileNumber>
      <issuerAddress>
        <com:street1>410 NORTH SCOTTSDALE ROAD, SUITE 1300</com:street1>
        <com:city>TEMPE</com:city>
        <com:stateOrCountry>AZ</com:stateOrCountry>
        <com:zipCode>85288</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>408-470-1000</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Wright Emory</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Charles Schwab &amp; Co., Inc.</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>2500</noOfUnitsSold>
      <aggregateMarketValue>582362.00</aggregateMarketValue>
      <noOfUnitsOutstanding>74653060</noOfUnitsOutstanding>
      <approxSaleDate>11/25/2024</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>02/20/2019</acquiredDate>
      <natureOfAcquisitionTransaction>Restricted Stock Award</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>2500</amountOfSecuritiesAcquired>
      <paymentDate>02/20/2019</paymentDate>
      <natureOfPayment>Equity Compensaton</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>2a) Wright TBH Irrev Tr 5/14/2020, Emory and Gini Wright TTEES 2a) Wright Liv Tr 6/27/2018, Emory and Gini Wright TTEES</remarks>
    <noticeSignature>
      <noticeDate>11/25/2024</noticeDate>
      <signature>Emory Wright TTEE for Wright TBH Irrev Tr and Wright Liv Tr</signature>
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144
0001419490
XXXXXXXX
LIVE
0001097149
ALIGN TECHNOLOGY INC
000-32259
410 NORTH SCOTTSDALE ROAD, SUITE 1300
TEMPE
AZ
85288
408-470-1000
Wright Emory
Director
Common
Charles Schwab & Co., Inc.
3000 Schwab Way
Westlake
TX
76262
2500
582362.00
74653060
11/25/2024
Nasdaq
Common
02/20/2019
Restricted Stock Award
Issuer
N
2500
02/20/2019
Equity Compensaton
Y
2a) Wright TBH Irrev Tr 5/14/2020, Emory and Gini Wright TTEES 2a) Wright Liv Tr 6/27/2018, Emory and Gini Wright TTEES
11/25/2024
Emory Wright TTEE for Wright TBH Irrev Tr and Wright Liv Tr