EXHIBIT 3.1

                              AMENDED AND RESTATED

                          CERTIFICATE OF INCORPORATION

                                       OF

                                 AUTODESK, INC.

                    (Pursuant to Sections 242 and 245 of the
                General Corporation Law of the State of Delaware)

     Carol A. Bartz and Marcia K. Sterling each hereby certifies:

     FIRST: They are the Chief Executive Officer and Secretary, respectively, of
Autodesk, Inc., a corporation organized and existing under the General
Corporation Law of the State of Delaware (the "General Corporation Law");

     SECOND: The original Certificate of Incorporation of this corporation,
originally filed on May 10, 1994, together with all subsequent amendments
thereto, is hereby amended and restated in its entirety to read as follows:

                                   ARTICLE I

     The name of this corporation is Autodesk, Inc. (the "Corporation").

                                   ARTICLE II

     The address of the Corporation's registered office in the State of Delaware
is Corporation Trust Center, 1209 Orange Street, in the City of Wilmington,
County of New Castle, 19801. The name of its registered agent at such address is
The Corporation Trust Company.

                                  ARTICLE III

     The purpose of the Corporation is to engage in any lawful act or activity
for which corporations may be organized under the General Corporation Law.

                                   ARTICLE IV

     Section 1. Classes of Stock. The Corporation is authorized to issue two
classes of stock to be designated respectively Common Stock and Preferred Stock.
The total number of shares of all classes of stock which the Corporation has
authority to issue is Four Hundred Million (400,000,000) shares of Common Stock,
$0.01 par value (the "Common Stock"), and Two Million (2,000,000) shares of
Preferred Stock, $0.01 par value (the "Preferred Stock"). Of the Preferred
Stock, 400,000 shares are hereby designated as Series A Participating Preferred
Stock, par value $0.01 per share (the "Series A Participating Preferred Stock")



     Section 2. Preferred Stock. The Preferred Stock may be issued from time to
time in one or more series. The Board of Directors is hereby authorized subject
to limitations prescribed by law, to fix by resolution or resolutions the
designations, powers, preferences and rights, and the qualifications,
limitations or restrictions thereof, of each such series of Preferred Stock,
including without limitation authority to fix by resolution or resolutions, the
dividend rights, dividend rate, conversion rights, voting rights, rights and
terms of redemption (including sinking fund provisions), redemption price or
prices, and liquidation preferences of any wholly unissued series of Preferred
Stock, and the number of shares constituting any such series and the designation
thereof, or any of the foregoing.

     The Board of Directors is further authorized to increase (but not above the
total number of authorized shares of the class) or decrease (but not below the
number of shares of any such series then outstanding) the number of shares of
any series, the number of which was fixed by it, subsequent to the issue of
shares of such series then outstanding, subject to the powers, preferences and
rights, and the qualifications, limitations and restrictions thereof stated in
the resolution of the Board of Directors originally fixing the number of shares
of such series. If the number of shares of any series is so decreased, then the
shares constituting such decrease shall resume the status which they had prior
to the adoption of the resolution originally fixing the number of shares of such
series.

     Section 3. Series A Participating Preferred Stock. The relative rights,
preferences, privileges and restrictions of the Series A Participating Preferred
Stock are as follows:

            (a) Dividends and Distributions.

                (i) Subject to the prior and superior right of the holders of
any shares of any series of Preferred Stock ranking prior and superior to the
shares of Series A Participating Preferred Stock with respect to dividends, the
holders of shares of Series A Participating Preferred Stock shall be entitled to
receive when, as and if declared by the Board of Directors out of funds legally
available for the purpose, quarterly dividends payable in cash on the last day
of January, April, July and October in each year (each such date being referred
to herein as a "Quarterly Dividend Payment Date"), commencing on the first
Quarterly Dividend Payment Date after the first issuance of a share or fraction
of a share of Series A Participating Preferred Stock, in an amount per share
(rounded to the nearest cent) equal to, subject to the provision for adjustment
hereinafter set forth, 1,000 times the aggregate per share amount of all cash
dividends, and 1,000 times the aggregate per share amount (payable in kind) of
all non-cash dividends or other distributions other than a dividend payable in
shares of Common Stock or a subdivision of the outstanding shares of Common
Stock (by reclassification or otherwise), declared on the Common Stock since the
immediately preceding Quarterly Dividend Payment Date, or, with respect to the
first Quarterly Dividend Payment Date, since the first issuance of any share or
fraction of a share of Series A Participating Preferred Stock. In the event the
Corporation shall at any time after December 14, 1995 (the "Rights Dividend
Declaration Date") (A) declare any dividend on Common Stock payable in shares of
Common Stock, (B) subdivide the outstanding Common Stock, or (C) combine the
outstanding Common Stock into a smaller number of shares, then in each such case
the amount to which holders of shares of Series A Participating Preferred Stock
were entitled immediately prior

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to such event under the preceding sentence shall be adjusted by multiplying such
amount by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

         (ii)  The Corporation shall declare a dividend or distribution on the
Series A Participating Preferred Stock as provided in paragraph (i) above
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock).

         (iii) Dividends shall begin to accrue and be cumulative on outstanding
shares of Series A Participating Preferred Stock from the Quarterly Dividend
Payment Date next preceding the date of issue of such shares of Series A
Participating Preferred Stock, unless the date of issue of such shares is prior
to the record date for the first Quarterly Dividend Payment Date, in which case
dividends on such shares shall begin to accrue from the date of issue of such
shares, or unless the date of issue is a Quarterly Dividend Payment Date or is a
date after the record date for the determination of holders of shares of Series
A Participating Preferred Stock entitled to receive a quarterly dividend and
before such Quarterly Dividend Payment Date, in either of which events such
dividends shall begin to accrue and be cumulative from such Quarterly Dividend
Payment Date. Accrued but unpaid dividends shall not bear interest. Dividends
paid on the shares of Series A Participating Preferred Stock in an amount less
than the total amount of such dividends at the time accrued and payable on such
shares shall be allocated pro rata on a share-by-share basis among all such
shares at the time outstanding. The Board of Directors may fix a record date for
the determination of holders of shares of Series A Participating Preferred Stock
entitled to receive payment of a dividend or distribution declared thereon,
which record date shall be no more than 30 days prior to the date fixed for the
payment thereof.

     (b) Voting Rights. The holders of shares of Series A Participating
Preferred Stock shall have the following voting rights:

         (i)   Subject to the provision for adjustment hereinafter set forth,
each share of Series A Participating Preferred Stock shall entitle the holder
thereof to 1,000 votes on all matters submitted to a vote of the stockholders of
the Corporation. In the event the Corporation shall at any time after the Rights
Dividend Declaration Date (A) declare any dividend on Common Stock payable in
shares of Common Stock, (B) subdivide the outstanding Common Stock, or (C)
combine the outstanding Common Stock into a smaller number of shares, then in
each such case the number of votes per share to which holders of shares of
Series A Participating Preferred Stock were entitled immediately prior to such
event shall be adjusted by multiplying such number by a fraction, the numerator
of which is the number of shares of Common Stock outstanding immediately after
such event and the denominator of which is the number of shares of Common Stock
that were outstanding immediately prior to such event.

         (ii)  Except as otherwise provided herein or by law, the holders of
shares of Series A Participating Preferred Stock and the holders of shares of
Common Stock shall vote together as one class on all matters submitted to a vote
of stockholders of the Corporation.

                                                                             -3-



         (iii) Except as required by law, holders of Series A Participating
Preferred Stock shall have no special voting rights and their consent shall not
be required (except to the extent they are entitled to vote with holders of
Common Stock as set forth herein) for taking any corporate action.

     (c) Certain Restrictions.

         (i)   The Corporation shall not declare any dividend on, make any
distribution on, or redeem or purchase or otherwise acquire for consideration
any shares of Common Stock after the first issuance of a share or fraction of a
share of Series A Participating Preferred Stock unless concurrently therewith it
shall declare a dividend on the Series A Participating Preferred Stock as
required by Section 3(a) hereof.

         (ii)  Whenever quarterly dividends or other dividends or distributions
payable on the Series A Participating Preferred Stock as provided in Section
3(a) are in arrears, thereafter and until all accrued and unpaid dividends and
distributions, whether or not declared, on shares of Series A Participating
Preferred Stock outstanding shall have been paid in full, the Corporation shall
not:

               (A) declare or pay dividends on, make any other distributions on,
or redeem or purchase or otherwise acquire for consideration any shares of stock
ranking junior (either as to dividends or upon liquidation, dissolution or
winding up) to the Series A Participating Preferred Stock;

               (B) declare or pay dividends on, or make any other distributions
on, any shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with Series A Participating Preferred
Stock, except dividends paid ratably on the Series A Participating Preferred
Stock and all such parity stock on which dividends are payable or in arrears in
proportion to the total amounts to which the holders of all such shares are then
entitled;

               (C) redeem or purchase or otherwise acquire for consideration
shares of any stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Series A Participating
Preferred Stock, provided that the Corporation may at any time redeem, purchase
or otherwise acquire shares of any such parity stock in exchange for shares of
any stock of the Corporation ranking junior (either as to dividends or upon
dissolution, liquidation or winding up) to the Series A Participating Preferred
Stock;

               (D) purchase or otherwise acquire for consideration any shares of
Series A Participating Preferred Stock, or any shares of stock ranking on a
parity with the Series A Participating Preferred Stock, except in accordance
with a purchase offer made in writing or by publication (as determined by the
Board of Directors) to all holders of such shares upon such terms as the Board
of Directors, after consideration of the respective annual dividend rates and
other relative rights and preferences of the respective series and classes,
shall determine in good faith will result in fair and equitable treatment among
the respective series or classes.

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               (iii) The Corporation shall not permit any subsidiary of the
Corporation to purchase or otherwise acquire for consideration any shares of
stock of the Corporation unless the Corporation could, under paragraph (i) of
this Section 3(c), purchase or otherwise acquire such shares at such time and in
such manner.

           (d) Reacquired Shares. Any shares of Series A Participating Preferred
Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock and may be reissued as part of a new series of
Preferred Stock to be created by resolution or resolutions of the Board of
Directors, subject to the conditions and restrictions on issuance set forth
herein.

           (e) Liquidation, Dissolution or Winding Up.

               (i)   Upon any liquidation (voluntary or otherwise), dissolution
or winding up of the Corporation, no distribution shall be made to the holders
of shares of stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Series A Participating Preferred Stock unless,
prior thereto, the holders of shares of Series A Participating Preferred Stock
shall have received $1,000.00 per share, plus an amount equal to accrued and
unpaid dividends and distributions thereon, whether or not declared, to the date
of such payment (the "Series A Liquidation Preference"). Following the payment
of the full amount of the Series A Liquidation Preference, no additional
distributions shall be made to the holders of shares of Series A Participating
Preferred Stock unless, prior thereto, the holders of shares of Common Stock
shall have received an amount per share (the "Common Adjustment") equal to the
quotient obtained by dividing (A) the Series A Liquidation Preference by (B)
1,000 (as appropriately adjusted as set forth in subparagraph (iii) below to
reflect such events as stock splits, stock dividends and recapitalization with
respect to the Common Stock) (such number in clause (B), the "Adjustment
Number"). Following the payment of the full amount of the Series A Liquidation
Preference and the Common Adjustment in respect of all outstanding shares of
Series A Participating Preferred Stock and Common Stock, respectively, holders
of Series A Participating Preferred Stock and holders of shares of Common Stock
shall receive their ratable and proportionate share of the remaining assets to
be distributed in the ratio of the Adjustment Number to one with respect to such
Preferred Stock and Common Stock, on a per share basis, respectively.

               (ii)  In the event, however, that there are not sufficient assets
available to permit payment in full to the Series A Liquidation Preference and
the liquidation preferences of all other series of Preferred Stock, if any,
which rank on a parity with the Series A Participating Preferred Stock, then
such remaining assets shall be distributed ratably to the holders of such parity
shares in proportion to their respective liquidation preferences. In the event,
however, that there are not sufficient assets available to permit payment in
full of the Common Adjustment, then such remaining assets shall be distributed
ratably to the holders of Common Stock.

               (iii) In the event the Corporation shall at any time after the
Rights Dividend Declaration Date (A) declare any dividend on Common Stock
payable in shares of Common Stock, (B) subdivide the outstanding Common Stock,
or (C) combine the outstanding Common Stock into a

                                                                             -5-



smaller number of shares, then in each such case the Adjustment Number in effect
immediately prior to such event shall be adjusted by multiplying such Adjustment
Number by a fraction the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

         (f) Consolidation, Merger, etc. In case the Corporation shall enter
into any consolidation, merger, combination or other transaction in which the
shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case the shares of
Series A Participating Preferred Stock shall at the same time be similarly
exchanged or changed in an amount per share (subject to the provision for
adjustment hereinafter set forth) equal to 1,000 times the aggregate amount of
stock, securities, cash and/or any other property (payable in kind), as the case
may be, into which or for which each share of Common Stock is changed or
exchanged. In the event the Corporation shall at any time after the Rights
Dividend Declaration Date (i) declare any dividend on Common Stock payable in
shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii)
combine the outstanding Common Stock into a smaller number of shares, then in
each such case the amount set forth in the preceding sentence with respect to
the exchange or change of shares of Series A Participating Preferred Stock shall
be adjusted by multiplying such amount by a fraction the numerator of which is
the number of shares of Common Stock outstanding immediately after such event
and the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

         (g) No Redemption. The shares of Series A Participating Preferred Stock
shall not be redeemable.

         (h) Ranking. The Series A Participating Preferred Stock shall rank
junior to all other series of the Corporation's Preferred Stock as to the
payment of dividends and the distribution of assets, unless the terms of any
such series shall provide otherwise.

         (i) Amendment. This Amended and Restated Certificate of Incorporation
of the Corporation shall not be further amended in any manner which would
materially alter or change the powers, preference or special rights of the
Series A Participating Preferred Stock so as to affect them adversely without
the affirmative vote of the holders of a majority or more of the outstanding
shares of Series A Participating Preferred Stock, voting separately as a class.

         (j) Fractional Shares. Series A Participating Preferred Stock may be
issued in fractions of a share which shall entitle the holder, in proportion to
such holder's fractional shares, to exercise voting rights, receive dividends,
participate in distributions and to have the benefit of all other rights of
holders of Series A Participating Preferred Stock.

                                   ARTICLE V

     The Corporation is to have perpetual existence.

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                                   ARTICLE VI

         The election of directors need not be by written ballot unless a
stockholder demands election by written ballot at a meeting of stockholders and
before voting begins or unless the Bylaws of the Corporation shall so provide.

                                  ARTICLE VII

         The number of directors which constitute the whole Board of Directors
of the Corporation shall be designated in the Bylaws of the Corporation.

                                  ARTICLE VIII

         In furtherance and not in limitation of the powers conferred by the
laws of the State of Delaware, the Board of Directors is expressly authorized to
adopt, alter, amend or repeal the Bylaws of the Corporation.

                                   ARTICLE IX

         To the fullest extent permitted by the General Corporation Law as the
same exists or may hereafter be amended, no director of the Corporation shall be
personally liable to the Corporation or its stockholders for monetary damages
for breach of fiduciary duty as a director.

         Neither any amendment nor repeal of this Article, nor the adoption of
any provision of this Amended and Restated Certificate of Incorporation
inconsistent with this Article, shall eliminate or reduce the effect of this
Article in respect of any matter occurring, or any cause of action, suit or
claim that, but for this Article, would accrue or arise, prior to such
amendment, repeal or adoption of an inconsistent provision.

                                   ARTICLE X

         At the election of directors of the Corporation, each holder of stock
of any class or series shall be entitled to one vote for each share held. No
stockholder will be permitted to cumulate votes at any election of directors.

                                   ARTICLE XI

         Meetings of stockholders may be held within or without the State of
Delaware, as the Bylaws may provide. The books of the Corporation may be kept
(subject to any provision contained in the laws of the State of Delaware)
outside of the State of Delaware at such place or places as may be designated
from time to time by the Board of Directors or in the Bylaws of the Corporation.

                                  ARTICLE XII

         The Corporation reserves the right to amend, alter, change or repeal
any provision contained in this Amended and Restated Certificate of
Incorporation, in the manner now or hereafter

                                                                             -7-



prescribed by the laws of the State of Delaware, and all rights conferred herein
are granted subject to this reservation.

         THIRD: This Amended and Restated Certificate of Incorporation has been
duly adopted by the Board of Directors of this Corporation in accordance with
Sections 242 and 245 of the General Corporation Law.

         FOURTH: This Amended and Restated Certificate of Incorporation has been
duly approved, in accordance with Section 242 of the General Corporation Law, by
vote of the holders of a majority of the outstanding stock entitled to vote
thereon.

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         IN WITNESS WHEREOF, the undersigned have executed this Amended and
Restated Certificate of Incorporation on this 30/th/ day of September, 2002.

                                        /s/ Carol A. Bartz
                                        ----------------------------------------
                                        Carol A. Bartz
                                        Chief Executive Officer

/s/ Marcia K. Sterling
- ----------------------------------------
Marcia K. Sterling
Secretary