EXHIBIT 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

   We hereby consent to the incorporation by reference in the Registration
Statement on Form S-8 (File No. 333-55020) of Align Technology, Inc. and
subsidiary, of our report dated February 9, 2001, except for Note 13 which is
as of March 15, 2001, relating to the consolidated financial statements, which
appears in this Form 10-K. We also consent to the reference to us under the
heading "Selected Consolidated Financial Data" in such Registration Statement.

PricewaterhouseCoopers LLP
San Jose, California
March 30, 2001