UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 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)  March 18, 2004
                                                 ---------------

                             ALIGN TECHNOLOGY, INC.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

          Delaware                       0-32259                 94-3267295
- ----------------------------      -----------------------    -------------------
(State or other jurisdiction     (Commission File Number)     (I.R.S. Employer
     of incorporation)                                       Identification No.)

      881 Martin Avenue, Santa Clara, California                   95050
- --------------------------------------------------------------------------------
       (Address of principal executive offices)                  (Zip Code)

Registrant's telephone number, including area code (408) 470-1000
                                                   --------------

                                 Not applicable
- --------------------------------------------------------------------------------
          (Former name or former address, if changed since last report)


ITEM 5. OTHER EVENTS

      On March 18, 2004, Align Technology, Inc. (Align) announced that C.
Raymond Larkin, Jr. had been appointed to the Board of Directors of Align.

ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS

      (c)   Exhibits.

Exhibit No.                            Description
- -----------    -----------------------------------------------------------------

   99.1        Press Release, dated March 18, 2004, for Align Technology, Inc.
               announcing the appointment of C. Raymond Larkin, Jr. to the Board
               of Directors.


                                      -2-


                                   SIGNATURES

      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: March 18, 2004                          ALIGN TECHNOLOGY, INC.

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


                                      -3-


                                INDEX TO EXHIBITS

Exhibit No.                            Description
- -----------    -----------------------------------------------------------------

   99.1        Press Release, dated March 18, 2004, for Align Technology, Inc.
               announcing the appointment of C. Raymond Larkin, Jr. to the Board
               of Directors.