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:

         (1) 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");

         (2) The original Certificate of Incorporation of this corporation,
originally filed on May 10, 1994, is hereby amended and restated in its entirety
to read as follows:

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

SECOND:                    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, zip code 19801. The name of its
                           registered agent at such address is The Corporation
                           Trust Company.

THIRD:                     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 of 
                           Delaware.

FOURTH:                    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 Two Hundred Fifty-Two Million
                           (252,000,000), consisting of Two Hundred Fifty
                           Million (250,000,000) 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").

                           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.

FIFTH:                     The Corporation is to have perpetual existence.

SIXTH:                     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.

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

EIGHTH:                    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.

NINTH:                     To the fullest extent permitted by the Delaware
                           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.

TENTH:                     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.

ELEVENTH:                  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.

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

         (3) 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.

         (4) 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.

         IN WITNESS WHEREOF, the undersigned have executed this Amended and
Restated Certificate of Incorporation on this 16th day of April, 1998.


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

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