UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K
                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934

        Date of Report (Date of earliest event reported): April 29, 2004



                                   GTSI CORP.

                            Incorporated in Delaware

                           Commission File No. 0-19394

                  I.R.S. Employer Identification No. 54-1248422

                            3901 Stonecroft Boulevard
                         Chantilly, Virginia 20151-1010
                                 (703) 502-2000





ITEM 12. RESULTS OF OPERATIONS AND FINANCIAL CONDITION

The information contained in this Item 12 of this Current Report is being
furnished in accordance with SEC Release Nos. 33-8216 and 34-47583.

The information, including the exhibits attached hereto, in this Current Report
is being furnished and shall not be deemed "filed" for the purposes of Section
18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to
the liabilities of that Section. The information in this Current Report shall
not be incorporated by reference into any registration statement or other
document pursuant to the Securities Act of 1933, except as otherwise expressly
stated in such filing.

Attached and incorporated herein by reference as Exhibit 99.1 is a copy of a
press release of GTSI Corp., dated April 27, 2004, reporting GTSI Corp.'s
financial results for the three-month period ended March 31, 2004 and monthly
sales.





                                   SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                        GTSI CORP.

                                        By:
                                           ------------------------------------
                                           Thomas A. Mutryn
                                           Senior Vice President and CFO

Date:  April 29, 2004






                                INDEX TO EXHIBITS

EXHIBIT NO.             DESCRIPTION

99.1                    Press Release issued by GTSI Corp. dated April 27, 2004.