THIRD  PROSPECTUS  SUPPLEMENT                 Filed  Pursuant to Rule  424(b)(3)
(to Prospectus dated May 19, 2000)            Registration No. 333-32816



                                2,827,273 Shares

                                AUTHORISZOR INC.
                                  Common Stock
                                 $.01 par value

                          -----------------------------


          This third prospectus supplement supplements and amends the prospectus
dated May 19, 2000, the first  prospectus  supplement  dated August 24, 2000 and
the second prospectus  supplement dated November 14, 2000, relating to 2,827,273
shares of the common stock,  par value $.01, of  Authoriszor  Inc.,  that may be
offered  and sold from time to time by certain of our  stockholders.  Unless the
context otherwise requires,  "Authoriszor," the "Company," "we," "our," "us" and
similar expressions refers to Authoriszor Inc. and its predecessors,  but not to
the selling  stockholders.  "Selling  stockholders"  refers to the  stockholders
identified  under  the  caption  "Plan of  Distribution;  Selling  Stockholder",
contained in the first prospectus supplement dated August 24, 2000.

          Our common  stock is traded on the Nasdaq  National  Market  under the
symbol  "AUTH." On January 29, 2001,  the closing  price for our common stock on
the Nasdaq National Market was $2.59.

          We will receive none of the proceeds from the sale of the common stock
offered by the selling  stockholders.  We will pay for expenses of preparing and
filing  the  registration  statement,  the  prospectus,   the  first  prospectus
supplement,  the second prospectus  supplement,  the third prospectus supplement
and all other  prospectus  supplements.  The selling  stockholders  will pay all
selling and other expenses that they incur.

          The prospectus,  together with the first  prospectus  supplement,  the
second  prospectus  supplement and this prospectus  supplement,  constitutes the
prospectus  required to be delivered by Section 5(b) of the  Securities Act with
respect to offers and sales of the shares of common stock. All references in the
prospectus to "this  prospectus" are hereby amended to read "this prospectus (as
supplemented and amended)".

          YOU SHOULD READ THE PROSPECTUS,  THE FIRST PROSPECTUS SUPPLEMENT,  THE
SECOND PROSPECTUS SUPPLEMENT AND THIS PROSPECTUS SUPPLEMENT CAREFULLY BEFORE YOU
INVEST, INCLUDING THE RISK FACTORS WHICH BEGIN ON PAGE 4 OF THE PROSPECTUS.

          NEITHER  THE  SECURITIES   AND  EXCHANGE   COMMISSION  NOR  ANY  STATE
SECURITIES  COMMISSION  HAS  APPROVED  OR  DISAPPROVED  OF THESE  SECURITIES  OR
DETERMINED  IF  THIS  PROSPECTUS   SUPPLEMENT  IS  TRUTHFUL  OR  COMPLETE.   ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

                          -----------------------------


           The date of this Prospectus Supplement is January 30, 2001.






          This  prospectus  is hereby  amended to reflect  in its  entirety  the
resignation,  effective  January  31,  2001,  of  Richard  A.  Langevin  as  our
President, Chief Executive Officer and Interim Chief Financial Officer, and as a
member of the Board of  Directors.  This  prospectus  is further  amended in its
entirety to reflect that, as a result of the resignation of Mr.  Langevin,  Paul
Ayres, currently the Managing Director of Authoriszor Ltd., was appointed by our
Board as our President and Chief Executive Officer and Andrew Cussons, currently
the Finance  Director of  Authoriszor  Ltd.,  was  appointed by the Board as our
Chief  Financial  Officer.  This prospectus is further amended to reflect in its
entirety that the Board of Directors has appointed Mr. Ayres and Mr.  Cussons to
our Board of Directors.  Each of the foregoing appointments is effective January
31, 2001

          The section of this  prospectus  entitled  "Management"  is amended to
reflect the following  information with respect to Paul Ayres and Andrew Cussons
and other members of management of our Company.

Management

          The  information  concerning  Paul  Ayres is  contained  in the second
supplement to the  prospectus  and is  incorporated  by reference  herein as the
information  contained  therein with respect to Mr. Ayres remains  substantially
accurate.

          ANDREW  CUSSONS was  appointed  Financial  Director  and  Secretary of
Authoriszor  Ltd.,  and Finance  Director of  Authoriszor  Holdings  Ltd.,  both
wholly-owned  subsidiaries  of the Company,  in January  2000.  Prior to joining
Authoriszor   Ltd.,  Mr.   Cussons  was  Finance   Director  and  Secretary  for
Meta4Systems, a firm specializing in engineering systems integration,  from 1998
until  joining the Company.  From 1996 until 1998,  Mr.  Cussons was employed by
Cadhouse  Systems  Ltd.,  a  Manchester,   England  based  engineering  software
business, as the Finance Director and Secretary.  Prior to 1996, Mr. Cussons was
the  proprietor  of  Churchgate  Consulting  Ltd.  Mr.  Cussons  has a degree in
Economics from Manchester University and is a Chartered Accountant.

          Mr. Cussons  beneficially  owns 9,300 shares of our common stock which
he purchased  in a series of open market  transactions  prior to his  employment
with us. In  addition,  we have  granted Mr.  Cussons a stock  option to acquire
100,000  shares of our common  stock at an exercise  price of $6.75 per share in
accordance with the Authoriszor  Inc. 1999 Stock Option Plan. These options vest
up to 25% per year  annually  beginning  on January 1, 2001,  assuming  that Mr.
Cussons is employed by the Company on each respective  vesting date. The options
terminate on January 1, 2008.

In  addition,  our Board of  Directors  made the  following  announcements  with
respect to certain management changes:

o         James L.  Jackson  will  resign  from his  position as Chairman of the
          Board of Authoriszor  Ltd. and from his position as our Vice President
          and Secretary,  effective January 31, 2001. Andrew Cussons will assume
          the role of Secretary of the Company; and

o         Ian McNeill stepped down from his position as Chairman of the Board of
          Authoriszor Holdings Ltd. and will continue as an active consultant to
          our  Board  of  Directors.  Mr.  McNeill  will be  replaced  by  Geoff
          Shingles, a current member of our Board of Directors.

          This prospectus is hereby amended to include the following description
at the beginning of the section entitled "Employment  Contracts,  Termination of
Employment and Change-in-Control Agreements":

Employment Contracts, Termination of Employment and Change-in-Control Agreements

          On January 31, 2001,  Richard A. Langevin resigned his position as the
President,  Chief  Executive  Officer and  Interim  Chief  Financial  Officer of
Authoriszor  Inc., and his position as director on the Board of Directors of our
Company.  In  addition,  Mr.  Langevin  resigned  from the  various  officer and
director positions he held in certain of our affiliate companies,  including our
wholly owned subsidiaries,  Authoriszor Holdings  Corporation,  Authoriszor U.S.
Corporation  and  Authoriszor   Holdings   Limited.   In  connection  with  such
resignation,  we have  entered  into a Severance  and Release  Agreement,  dated
January 31, 2001 with Mr. Langevin.

          The following are the material  terms and  conditions of the Severance
Agreement:

o         We are obligated to pay Mr.  Langevin the  following  sums of money in
          connection with the Severance Agreement on January 31, 2001:

o         $19,791.67, minus applicable withholdings for federal and state income
          tax, FICA, and any other  withholdings  required by federal,  state or
          local law,  which  payment  reflects  salary and bonus earned  through
          January 31, 2001;

o         $450,000.00,  minus  applicable  withholdings  for  federal  and state
          income  tax,  FICA,  and any other  withholdings  required by federal,
          state or local law, which payments  reflect a severance  payment equal
          to two years of salary;

o         $31,250.00, minus applicable withholdings for federal and state income
          tax, FICA, and any other  withholdings  required by federal,  state or
          local law, for purposes of Mr.  Langevin's  October to December  bonus
          for the year 2000; and

o         $23,958.00, minus applicable withholdings for federal and state income
          tax, FICA, and any other  withholdings  required by federal,  state or
          local law,  reflecting  payment for Mr. Langevin's  accrued but unused
          vacation time during the year 2000.

o         On January 31, 2002, we are  obligated to pay Mr.  Langevin the sum of
          $250,000.00, minus applicable withholdings, as an additional severance
          payment  equal to Mr.  Langevin's  bonus  compensation  for a two year
          period.  However,  this bonus  payment  will be placed in an  interest
          bearing  escrow  account  on January  31,  2001 with  instructions  to
          release such funds to Mr. Langevin on January 31, 2002. As a condition
          to the payment of the funds herein,  Mr. Langevin must comply with the
          terms and  conditions  of the  Severance  Agreement and shall have not
          revoked his  releases  and  waivers  under the Age  Discrimination  in
          Employment  Act. All  interest  earned on the funds held in the escrow
          account will be retained by us.

o         The Company and Mr.  Langevin  entered into a Stock Option  Agreement,
          dated as of January 31, 2001.  The Severance  Agreement  provides that
          all stock option agreements for which Mr. Langevin is not vested as of
          the date of January 31, 2001 are  rescinded and declared null and void
          and  replaced by this stock  option  agreement.  The new stock  option
          agreement  provides Mr.  Langevin  with an option to purchase  200,000
          shares of our common stock  exercisable  in  increments of (i) 100,000
          shares  exercisable  beginning on January 31,  2001,  and (ii) 100,000
          shares  exercisable  beginning on January 31, 2002, all at an exercise
          price of $6.75 per share.  Neither the Severance Agreement nor the new
          stock  option  agreement  affects  Mr.  Langevin's  rights to  options
          granted under prior stock option  agreements  and which were vested as
          of the date of the Severance Agreement.

o         Mr.  Langevin has elected to reinstate and continue in accordance with
          the terms of the Employer's medical plan and the Consolidated  Omnibus
          Budget Reconciliation Act of 1985, as amended,  ("COBRA"), and we have
          agreed to pay on behalf Mr. Langevin,  the applicable premium which is
          required to reinstate and continue such group  medical  coverage,  but
          only to the extent such coverage was in effect on the date immediately
          prior  to Mr.  Langevin's  resignation  date.  We will  continue  such
          premium  payments  until the earlier of the  following:  (i) the first
          date that Mr. Langevin becomes eligible for medical coverage under any
          other  group  medical  plan;  (ii)  the date Mr.  Langevin  elects  to
          discontinue medical coverage for himself and his dependents; (iii) the
          first  date that Mr.  Langevin  is no longer  otherwise  eligible  for
          coverage  under  COBRA,  as  determined  by us;  and  (iv)  the  first
          anniversary of Mr. Langevin's resignation date.

o         In  consideration  of the payment of the above described sums of money
          and the  issuance  of the  options  to  purchase  shares of our common
          stock,  Mr.  Langevin  agreed to release  and waive any and all claims
          against us and our subsidiaries with respect to and including, without
          limitation,  any claim relating the Employment Agreement,  dated as of
          January 1, 2000 between Mr.  Langevin and us, any claim under state or
          federal law which provides for civil  remedies for the  enforcement or
          rights  arising  out of the  employment  relationship,  any claims for
          unpaid or withheld wages, and any claims sounding in contract, tort or
          otherwise;  provided,  however,  that Mr. Langevin  remains subject to
          certain  provisions  in his prior  Employment  Agreement  relating  to
          non-competition, non-disclosure and non-solicitation provisions.

o         The Severance Agreement also provides that Mr. Langevin is required to
          return all of our  proprietary  material,  including  notes,  records,
          reports and such other items  obtained by him during the course of his
          employment.  In  addition,  Mr.  Langevin  is  required  to return the
          vehicle  provided to him by us. We have  permitted the  utilization by
          Mr. Langevin,  at Mr. Langevin's own expense, of a certain third-party
          executive recruiting firm.

o         The Severance  Agreement contains a provision allowing Mr. Langevin to
          revoke his  acceptance  of the releases  and waivers  contained in the
          Severance   Agreement  with  respect  to  the  Age  Discrimination  in
          Employment  Act after he signs it for a period of seven days following
          his  resignation  from the Company on January 31, 2001.  However,  the
          payment in the amount of $250,000.00  shall be paid to Mr. Langevin no
          sooner than the expiration of the seven day period with respect to any
          releases  and  waivers  in  the  Severance  Agreement  under  the  Age
          Discrimination  in Employment  Act. Any revocation by Mr.  Langevin in
          accordance  with  such  provisions,  however,  shall  not  affect  the
          enforceability of any other provision of the Severance Agreement,  and
          all  other  provisions,  releases,  waivers,  and  payments  under the
          Severance Agreement shall remain enforceable.