As filed with the Securities and Exchange Commission on January 5, 2005
                           Registration No. 333-111631

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                         POST-EFFECTIVE AMENDMENT NO. 1

                                       TO

                                    FORM S-8
                        REGISTRATION STATEMENT UNDER THE
                             SECURITIES ACT OF 1933

                        Anteon International Corporation

             (Exact Name of Registrant as Specified in Its Charter)

                  Delaware                           13-3880755
           ----------------------         ---------------------------------
          (State of Incorporation)        (IRS Employer Identification No.)
                         3211 Jermantown Road, Suite 700
                          Fairfax, Virginia 22030-2801
                                 (703) 246-0200
- --------------------------------------------------------------------------------
                    (Address of Principal Executive Offices)
                        Anteon International Corporation
                      Supplemental Retirement Savings Plan
                            (Full Title of the Plan)

                             Curtis L. Schehr, Esq.
              Senior Vice President, General Counsel and Secretary
                        Anteon International Corporation
                         3211 Jermantown Road, Suite 700
                          Fairfax, Virginia 22030-2801
                                 (703) 246-0200
 (Name, Address and Telephone Number, Including Area Code, of Agent for Service)

     This  Post-Effective  Amendment to  Registration  Statement No.  333-111631
shall become  effectively  automatically  upon the date of filing in  accordance
with Rules 456 and 464 promulgated under the Securities Act of 1933, as amended.





                                Explanatory Note

     Anteon  International  Corporation  previously  registered  an  offering of
Participation  Interests on Form S-8  (Registration  Statement  No.  333-111631)
relating to the Anteon International Corporation Supplemental Retirement Savings
Plan (the "Plan").  The Board of Directors of Anteon  International  Corporation
has adopted an amendment and restatement of the Plan,  pursuant to its authority
under the Plan,  to conform the Plan with the  applicable  provisions of Section
409A of the  Internal  Revenue  Code,  which was enacted as part of the American
Jobs Creation Act.

Item 8.        Exhibits.

               The  following  exhibit  is filed as part of this  Post-Effective
          Amendment No. 1 to Registration Statement No. 333-111631:

          No:       Exhibit:
          --        -------
          4.1       Anteon  International  Corporation  Supplemental  Retirement
                    Savings  Plan,  as  amended  and  restated  effective  as of
                    January 1, 2005





                                   SIGNATURES

     The Registrant. Pursuant to the requirements of the Securities Act of 1933,
the Registrant certifies that it has reasonable grounds to believe that it meets
all of the  requirements  for  filing  on  Form  S-8 and has  duly  caused  this
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly  authorized,  in the City of Fairfax,  State of  Virginia,  on January 4,
2005.

                                Anteon International Corporation
                                (Registrant)

                                By:  \s\: Joseph M. Kampf
                                     --------------------------------------
                                     Joseph M. Kampf
                                     President and Chief Executive Officer
                                     (Principal Executive Officer)

     Pursuant  to  the   requirements  of  the  Securities  Act  of  1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.




              Signature                                         Title                                     Date

                                                                                             
\s\: Joseph M. Kampf
- ------------------------                President, Chief Executive Officer and Director            January 4, 2005
Joseph M. Kampf                         (Principal Executive Officer)

\s\: Charles S. Ream
- ------------------------                Executive Vice President and Chief Financial               January 4, 2005
Charles S. Ream                         (Principal Financial and Accounting Officer)

          *                             Chairman of the Board of Directors                         January 4, 2005
- ------------------------
Frederick J. Iseman

          *                             Director                                                   January 4, 2005
- ------------------------
Gilbert F. Decker

          *                             Director                                                   January 4, 2005
- ------------------------
Robert A. Ferris

          *                             Director                                                   January 4, 2005
- ------------------------
Paul G. Kaminski

          *                             Director                                                   January 4, 2005
- ------------------------
Steven M. Lefkowitz

          *                             Director                                                   January 4, 2005
- ------------------------
General Henry Hugh Shelton,
USA (ret.)

          *                             Director                                                   January 4, 2005
- ------------------------
William J. Perry

     *Curtis L. Schehr,  by signing his name hereto,  does sign this document on
behalf of the  persons  indicated  above  pursuant  to powers of  attorney  duly
executed  by such  persons,  which  were  filed  by the  Registrant  on Form S-8
(Registration No. 333-111631) and are hereby incorporated by reference.

                                       By: \s\: Curtis L. Schehr
                                           -------------------------------------
                                            Curtis L. Schehr
                                            Attorney-in-Fact







                                  Exhibit Index

  Exhibit No.       Description
 ------------      -------------
     4.1            Anteon  International  Corporation  Supplemental  Retirement
                    Savings  Plan,  as  amended  and  restated  effective  as of
                    January 1, 2005





                   [Attach copy of Supplemental Savings Plan]