Exhibit 23.5


                         PROSPECTIVE DIRECTOR'S CONSENT

I hereby consent to being named as a prospective director of ManTech
International Corporation in the Registration Statement on Form S-1 of ManTech
International Corporation and hereby agree to serve in such capacity upon the
closing of the offering, and further consent to the inclusion of my name and
biographical information in any prospectus or registration statement filed on
behalf of ManTech International Corporation in connection with the offering.



                                        /s/ RICHARD J. KERR
                                        ---------------------------------
                                             Richard J. Kerr


Dated:  January 17, 2002