UNITED STATES
                              WASHINGTON, DC 20549

                                    FORM 8-K

                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

     Date of report (Date of earliest event reported) April 20, 2005

                             ALIGN TECHNOLOGY, INC.
             (Exact Name of Registrant as Specified in Its Charter)

                 (State or Other Jurisdiction of Incorporation)

         0-32259                                         94-3267295
------------------------                      --------------------------------
(Commission File Number)                      (IRS Employer Identification No.)

881 Martin Avenue, Santa Clara, California                 95050
------------------------------------------               ---------
(Address of Principal Executive Offices)                 (Zip Code)

                                 (408) 470-1000
              (Registrant's Telephone Number, Including Area Code)

                                 Not applicable
          (Former Name or Former Address, if Changed Since Last Report)

     Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     [ ] Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

     [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17
CFR 240.14a-12)

     [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

     [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))



     On April 20, 2005, Align Technology, Inc. ("Align") is issuing a press
release and holding a conference call regarding its financial results for its
first quarter ended March 31, 2005. The full text of the press release is
furnished as Exhibit 99.1 to this Form 8-K.

     This information shall not be deemed "filed" for purposes of Section 18 of
the Securities and Exchange Act of 1934, as amended (the "Exchange Act"), or
incorporated by reference in any filing under the Securities Act of 1933, as
amended, or the Exchange Act, except as shall be expressly set forth by specific
reference in such a filing.

     Align is making reference to non-GAAP financial information in both the
press release and the conference call. A reconciliation of non-GAAP financial
measures contained in this press release to the comparable GAAP financial
measures is contained in the attached press release and a reconciliation of
these and other non-GAAP financial information provided on the conference call
is contained on the Investor Relations section of our website at


      (C)   EXHIBITS.

EXHIBIT NO.                          DESCRIPTION
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   99.1         Press Release of Align Technology, Inc. dated April 20, 2005


Pursuant to the requirements of the Securities Exchange Act of 1934, as amended,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Dated: April20, 2005                  ALIGN TECHNOLOGY, INC.

                                      By: /s/ Eldon M. Bullington
                                          Eldon M. Bullington
                                          Vice President of Finance and Chief
                                          Financial Officer

                                INDEX TO EXHIBITS

EXHIBIT NO.                          DESCRIPTION
-----------     ----------------------------------------------------------------
   99.1         Press Release of Align Technology, Inc. dated April 20, 2005