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                                                                   Exhibit 10.15

                             ALIGN TECHNOLOGY, INC.

                           INDEMNIFICATION AGREEMENT

          THIS INDEMNIFICATION AGREEMENT (this "Agreement") is made and entered
into this [Day] day of [MoYear] between Align Technology, Inc., a Delaware
corporation (the "Company"), and [Name] ("Indemnitee").

          WHEREAS, Indemnitee, a member of the Board of Directors, performs a
valuable service in such capacity for the Company;

          WHEREAS, the stockholders of the Company have adopted Bylaws (the
"Bylaws") providing for the indemnification of the officers, directors,
employees and agents of the Company to the maximum extent authorized by Section
145 of the Delaware General Corporation Law, as amended (the "Code");

          WHEREAS, the Bylaws and the Code, by their non-exclusive nature,
permit contracts between the Company and the members of its Board of Directors
with respect to indemnification of such directors;

          WHEREAS, in accordance with the authorization as provided by the Code,
the Company either has purchased and presently maintains or intends to purchase
and maintain a policy or policies of Directors Liability Insurance ("Directors'
Insurance") covering certain liabilities which may be incurred by its directors
in the performance of their duties as directors of the Company;

          WHEREAS, as a result of developments affecting the terms, scope and
availability of Directors' Insurance there exists general uncertainty as to the
extent of protection afforded members of the Board of Directors by such
Directors' Insurance and by statutory and bylaw indemnification provisions; and

          WHEREAS, in order to induce Indemnitee to continue to serve as a
member of the Board of Directors of the Company, the Company has determined and
agreed to enter into this contract with Indemnitee.

          NOW, THEREFORE, in consideration of Indemnitee's continued service as
a director after the date hereof, and for other good and valid consideration,
the receipt and adequacy of which is hereby acknowledged, the parties hereto
agree as follows:

          1.   Indemnification of Indemnitee.  The Company hereby agrees to hold
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harmless and indemnify Indemnitee to the fullest extent authorized or permitted
by the provisions of the Code, as may be amended from time to time.

          2.   Additional Indemnity.  Subject only to the exclusions set forth
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in Sections 3 and 6(c) hereof, the Company hereby further agrees to hold
harmless and indemnify Indemnitee:
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               (a)  against any and all expenses (including attorneys' fees),
witness fees, judgments, fines and amounts paid in settlement actually and
reasonably incurred by Indemnitee in connection with any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative (including an action by or in the right of the Company) to which
Indemnitee is, was or at any time becomes a party, or is threatened to be made a
party, by reason of the fact that Indemnitee is, was or at any time becomes a
director of the Company or any subsidiary of the Company, or is or was serving
or at any time serves at the request of the Company as a director of another
corporation, partnership, joint venture, trust, employee benefit plan or other
enterprise; and

               (b)  otherwise to the fullest extent as may be provided to
Indemnitee by the Company under the non-exclusivity provisions of Article VII,
Section 6 of the Bylaws of the Company and the Code.

          3.   Limitations on Additional Indemnity.
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               (a)  No indemnity pursuant to Section 2 hereof shall be paid by
the Company:

                    i)     in respect to remuneration paid to Indemnitee if it
shall be determined by a final judgment or other final adjudication that such
remuneration was in violation of law;

                    ii)    on account of any suit in which judgment is rendered
against Indemnitee for an accounting of profits made from the purchase or sale
by Indemnitee of securities of the Company pursuant to the provisions of Section
16(b) of the Securities Exchange Act of 1934 and amendments thereto or similar
provisions of any federal, state or local statutory law;

                    iii)   on account of Indemnitee's conduct which is finally
adjudged to have been knowingly fraudulent or deliberately dishonest or to
constitute willful misconduct;

                    iv)    on account of Indemnitee's conduct which is the
subject of an action, suit or proceeding described in Section 6(c)(ii) hereof;

                    v)     on account of any action, claim or proceeding (other
than a proceeding referred to in Section 7(b) hereof) initiated by the
Indemnitee unless such action, claim or proceeding was authorized in the
specific case by action of the Board of Directors;

                    vi)    if a final decision by a Court having jurisdiction in
the matter shall determine that such indemnification is not lawful (and, in this
respect, both the Company and Indemnitee have been advised that the Securities
and Exchange Commission believes that indemnification for liabilities arising
under the federal securities laws is against public policy and is, therefore,
unenforceable and that claims for indemnification should be submitted to
appropriate courts for adjudication); and

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                    vii)   except to the extent the aggregate of losses to be
indemnified thereunder exceeds the sum of (a) such losses for which the
Indemnitee is indemnified pursuant to Section 1 hereof and (b) any additional
amount paid to the Indemnitee pursuant to any Directors' Insurance purchased and
maintained by the Company.

               (b)  No indemnity pursuant to Section 1 or 2 hereof shall be paid
by the Company if the action, suit or proceeding with respect to which a claim
for indemnity hereunder is made arose from or is based upon any of the
following:

                    i)     Any solicitation of proxies by Indemnitee, or by a
group of which he was or became a member consisting of two or more persons that
had agreed (whether formally or informally and whether or not in writing) to act
together for the purpose of soliciting proxies, in opposition to any
solicitation of proxies approved by the Board of Directors.

                    ii)    Any activities by Indemnitee that constitute a breach
of or default under any agreement between Indemnitee and the Company.

          4.   Contribution.  If the indemnification provided in Sections 1 and
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2 hereof is unavailable by reason of a Court decision described in Section
3(a)(vi) hereof based on grounds other than any of those set forth in paragraphs
(i) through (v) of Section 3 (a) hereof, then in respect of any threatened,
pending or completed action, suit or proceeding in which the Company is jointly
liable with Indemnitee (or would be if joined in such action, suit or
proceeding), the Company shall contribute to the amount of expenses (including
attorneys' fees), judgments, fines and amounts paid in settlement actually and
reasonably incurred and paid or payable by Indemnitee in such proportion as is
appropriate to reflect (i) the relative benefits received by the Company on the
one hand and Indemnitee on the other hand from the transaction from which such
action, suit or proceeding arose, and (ii) the relative fault of the Company on
the one hand and of Indemnitee on the other in connection with the events which
resulted in such expenses, judgments, fines or settlement amounts, as well as
any other relevant equitable considerations. The relative fault of the Company
on the one hand and of Indemnitee on the other shall be determined by reference
to, among other things, the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent the circumstances resulting in
such expenses, judgments, fines or settlement amounts. The Company agrees that
it would not be just and equitable if contribution pursuant to this Section 4
were determined by pro rata allocation or any other method of allocation which
does not take account of the foregoing equitable considerations.

          5.   Notification and Defense of Claim.  Not later than thirty (30)
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days after receipt by Indemnitee of notice of the commencement of any action,
suit or proceeding, Indemnitee shall, if a claim in respect thereof is to be
made against the Company under this Agreement, notify the Company of the
commencement thereof; but Indemnitee's omission so to notify the Company will
not relieve the Company from any liability which it may have to Indemnitee
otherwise than under this Agreement. With respect to any such action, suit or
proceeding as to which Indemnitee notifies the Company of the commencement
thereof:

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               (a)  The Company will be entitled to participate therein at its
own expense.

               (b)  Except as otherwise provided below, to the extent that it
may wish, the Company shall, jointly with any other indemnifying party similarly
notified, be entitled to assume the defense thereof, with counsel reasonably
satisfactory to Indemnitee. After notice from the Company to Indemnitee of its
election to assume the defense thereof, the Company will not be liable to
Indemnitee under this Agreement for any legal or other expenses subsequently
incurred by Indemnitee in connection with the defense thereof, other than
reasonable costs of investigation or as otherwise provided below. Indemnitee
shall have the right to employ its own counsel in such action, suit or
proceeding, but the fees and expenses of such counsel incurred after notice from
the Company of the Company's assumption of the defense thereof shall be at the
expense of Indemnitee unless (i) the employment of counsel by Indemnitee has
been authorized by the Company; (ii) Indemnitee shall have reasonably concluded
that there may be a conflict of interest between the Company and Indemnitee in
the conduct of the defense of such action; or (iii) the Company shall not in
fact have employed counsel to assume the defense of such action; in each of
which cases the fees and expenses of Indemnitee's separate counsel shall be paid
by the Company. The Company shall not be entitled to assume the defense of any
action, suit or proceeding brought by or on behalf of the Company or as to which
Indemnitee shall have made the conclusion provided for in (ii) above.

               (c)  The Company shall not be liable to indemnify Indemnitee
under this Agreement for any amounts paid in settlement of any action or claim
effected without its written consent. The Company shall be permitted to settle
any action except that it shall not settle any action or claim in any manner
which would impose any penalty or limitation on Indemnitee without Indemnitee's
written consent. Neither the Company nor Indemnitee will unreasonably withhold
its consent to any proposed settlement.

          6.   Advancement and Repayment of Expenses.
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               (a)  In the event that Indemnitee employs his or her own counsel
pursuant to Sections 5(b)(i) through (iii) above, the Company shall advance to
Indemnitee, prior to any final disposition of any threatened or pending action,
suit or proceeding, whether civil, criminal, administrative or investigative,
any and all reasonable expenses (including legal fees and expenses) incurred in
investigating or defending any such action, suit or proceeding within ten (10)
days after receiving from Indemnitee copies of invoices presented to Indemnitee
for such expenses.

               (b)  Indemnitee agrees that Indemnitee will reimburse the Company
for all reasonable expenses paid by the Company in investigating or defending
any civil or criminal action, suit or proceeding against Indemnitee in the event
and only to the extent it shall be ultimately determined by a final judicial
decision (from which there is no right of appeal) that Indemnitee is not
entitled, under the provisions of the Code, the Bylaws, this Agreement or
otherwise, to be indemnified by the Company for such expenses.

               (c)  Notwithstanding the foregoing, the Company shall not be
required to advance such expenses to Indemnitee in respect of any action arising
from or based upon any

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of the matters set forth in subsection (b) of Section 3 or if Indemnitee (i)
commences any action, suit or proceeding as a plaintiff unless such advance is
specifically approved by a majority of the Board of Directors or (ii) is a party
to an action, suit or proceeding brought by the Company and approved by a
majority of the Board which alleges willful misappropriation of corporate assets
by Indemnitee, disclosure of confidential information in violation of
Indemnitee's fiduciary or contractual obligations to the Company, or any other
willful and deliberate breach in bad faith of Indemnitee's duty to the Company
or its shareholders.

          7.   Enforcement.
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               (a)  The Company expressly confirms and agrees that it has
entered into this Agreement and assumed the obligations imposed on the Company
hereby in order to induce Indemnitee to continue as a directorof the Company,
and acknowledges that Indemnitee is relying upon this Agreement in continuing in
such capacity.

               (b)  In the event Indemnitee is required to bring any action to
enforce rights or to collect moneys due under this Agreement and is successful
in such action, the Company shall reimburse Indemnitee for all Indemnitee's
reasonable fees and expenses, including attorney's fees, in bringing and
pursuing such action.

          8.   Subrogation.  In the event of payment under this agreement, the
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Company shall be subrogated to the extent of such payment to all of the rights
of recovery of Indemnitee, who shall execute all documents required and shall do
all acts that may be necessary to secure such rights and to enable the Company
effectively to bring suit to enforce such rights.

          9.   Continuation of Obligations.  All agreements and obligations of
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the Company contained herein shall commence upon the date that Indemnitee first
became a member of the Board of Directors of the Company, as the case may be,
and shall continue during the period Indemnitee is a director of the Company (or
is or was serving at the request of the Company as a director of another
corporation, partnership, joint venture, trust, employee benefit plan or other
enterprise) and shall continue thereafter so long as Indemnitee shall be subject
to any possible claim or threatened, pending or completed action, suit or
proceeding, whether civil, criminal or investigative, by reason of the fact that
Indemnitee was a director of the Company or serving in any other capacity
referred to herein.

          10.  Survival of Rights.  The rights conferred on Indemnitee by this
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Agreement shall continue after Indemnitee has ceased to be a director of the
Company and shall inure to the benefit of Indemnitee's heirs, executors and
administrators.

          11.  Non-Exclusivity of Rights.  The rights conferred on Indemnitee by
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this Agreement shall not be exclusive of any other right which Indemnitee may
have or hereafter acquire under any statute, provision of the Company's
Certificate of Incorporation or Bylaws, agreement, vote of stockholders or
directors, or otherwise, both as to action in his official capacity and as to
action in another capacity while holding office; provided, however, that this
Agreement shall supersede and replace any prior indemnification agreements
entered into by and between the Company and Indemnitee and that any such prior
indemnification agreement shall be terminated upon the execution of this
Agreement.

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          12.  Separability.  Each of the provisions of this Agreement is a
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separate and distinct agreement and independent of the others, so that if any or
all of the provisions hereof shall be held to be invalid or unenforceable for
any reason, such invalidity or unenforceability shall not affect the validity or
enforceability of the other provisions hereof or the obligation of the Company
to indemnify the Indemnitee to the full extent provided by the Bylaws or the
Code.

          13.  Governing Law.  This Agreement shall be interpreted and enforced
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in accordance with the laws of the State of Delaware.

          14.  Binding Effect.  This Agreement shall be binding upon Indemnitee
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and upon the Company, its successors and assigns, and shall inure to the benefit
of Indemnitee, his or her heirs, personal representatives and assigns and to the
benefit of the Company, its successors and assigns.

          15.  Amendment and Termination.  No amendment, modification,
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termination or cancellation of this Agreement shall be effective unless it is in
writing and is signed by both parties hereto.

          IN WITNESS WHEREOF, the parties hereto have executed this Agreement on
and as of the day and year first above written.


                              ALIGN TECHNOLOGY, INC.
                              a Delaware corporation



                              By:
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                              INDEMNITEE




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                              [Name], [Title]



                      Address:
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