<SEC-DOCUMENT>0001649020-19-000006.txt : 20191129
<SEC-HEADER>0001649020-19-000006.hdr.sgml : 20191129
<ACCEPTANCE-DATETIME>20191129161448
ACCESSION NUMBER:		0001649020-19-000006
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20191126
FILED AS OF DATE:		20191129
DATE AS OF CHANGE:		20191129

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tay Julie
		CENTRAL INDEX KEY:			0001649020

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-32259
		FILM NUMBER:		191261376

	MAIL ADDRESS:	
		STREET 1:		C/O ALIGN TECHNOLOGY, INC.
		STREET 2:		2820 ORCHARD PARKWAY
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALIGN TECHNOLOGY INC
		CENTRAL INDEX KEY:			0001097149
		STANDARD INDUSTRIAL CLASSIFICATION:	ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES [3842]
		IRS NUMBER:				943267295
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2820 ORCHARD PARKWAY
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
		BUSINESS PHONE:		408-470-1000

	MAIL ADDRESS:	
		STREET 1:		2820 ORCHARD PARKWAY
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-11-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001097149</issuerCik>
        <issuerName>ALIGN TECHNOLOGY INC</issuerName>
        <issuerTradingSymbol>ALGN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001649020</rptOwnerCik>
            <rptOwnerName>Tay Julie</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ALIGN TECHNOLOGY, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2820 ORCHARD PARKWAY</rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95131</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Asia Pacific</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-11-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2739</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>280.0097</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11366</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $280.00 to $280.11, inclusive. The reporting person undertakes to provide Align Technology Inc., any security holder of Align Technology Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Julie Ann Coletti Atty-in-Fact for Julie Tay</signatureName>
        <signatureDate>2019-11-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>taypoa2019.txt
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
LIMITED POWER OF ATTORNEY - SECURITIES LAW COMPLIANCE
      The undersigned, as an officer or director of
Align Technology, Inc. (the "Company"), hereby constitutes
and appoints John Morici and Julie Ann Coletti and each of them,
the undersigned's true and lawful
attorney-in-fact and agent to complete and execute such
Forms 144, Forms 3, 4 and 5 and other forms as such attorney
shall in his discretion determine to be required or advisable
pursuant to Rule 144 promulgated under the Securities Act of
1933, as amended, Section 16 of the Securities Exchange
Act of 1934,as amended, and the rules and regulations
promulgated thereunder, or any successor laws and
regulations, as a consequence of the undersigned's
ownership, acquisition or disposition of securities of
the Company, and to do all acts necessary in order to
file such forms with the Securities and Exchange
Commission, any securities exchange or national
association, the Company and such other person or
agency as the attorney shall deem appropriate.  The
undersigned hereby ratifies and confirms all that
said attorneys-in-fact and agents shall do or cause
to be done by virtue hereof.
      This Limited Power of Attorney shall remain in full
force and effect until the undersigned is no longer required
to file Forms 3, 4 and 5 with respect to the undersigned's
holdings of and transactions in securities issued by
the Company unless earlier revoked by the undersigned
in a writing delivered to the foregoing attorneys-in-fact.
      This Limited Power of Attorney is executed at
San Jose, California, as of the date set forth below.


					/s/Julie Tay
					Julie Tay
					Dated:  07/17/19
Witness:

/s/ Mu Li
Mu Li
Dated: 07/17/2019














</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
