UNITED STATES	OMB APPROVAL
SECURITIES AND EXCHANGE COMMISSION	OMB Number: 3235-0058
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FORM 12b-25	SEC FILE NUMBER 0-19394
	CUSIP NUMBER
NOTIFICATION OF LATE FILING	36238K103

(Check one):	o Form 10-K	o Form 20-F	o Form 11-K	x Form 10-Q	o Form 10-D
	o Form N-SAR	o Form N-CSR
	For Period Ended:	September 30, 2006
	o Transition Report on Form 10-K
	o Transition Report on Form 20-F
	o Transition Report on Form 11-K
	o Transition Report on Form 10-Q
	o Transition Report on Form N-SAR
	For the Transition Period Ended:

Read Instructions (on back page) Before Preparing Form. Please Print or Type.

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

PART I — REGISTRANT INFORMATION

GTSI Corp.

Full Name of Registrant

Former Name if Applicable

3901 Stonecroft Boulevard

Address of Principal Executive Office (Street and Number)

Chantilly, Virginia 20151-1010

City, State and Zip Code

PART II — RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

	(a)	The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense
o	(b)	The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q, or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and
	(c)	The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

PART III — NARRATIVE

State below in reasonable detail the reasons why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

GTSI Corp, (“GTSI” or the “Company”) is currently in the process of conducting additional review on historical information and records related to transfers of receivables, the overstatement of accounts payable, and certain other accounting estimates and accruals. The Company previously concluded that a restatement was necessary for the 2004 and 2005 consolidated financial statements to correct the accounting for the transfer of certain lease receivables under Statement of Financial Accounting Standards No. 140 Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities.  The Company recently determined that it was also necessary to restate its 2003 consolidated financial statements as well due to required changes in accounting treatment.

In addition, after a review of the aged balances in certain accounts payable accounts, the Company identified several instances where cost of goods sold was overstated during prior periods due to certain systems and process-related errors. As a result, prior period adjustments to reduce cost of goods sold and the related liability will be recorded, which will affect the year to date financial statements as of September 30, 2006. As a result of the ongoing activity related to these restatements, it is necessary to delay the filing of the Form 10-Q for the quarter ended September 30, 2006.

While it may have been possible to file Items 3 and 4 of Part I and Part II of the Registrant’s Form 10-Q report for the three months ended September 30, 2006, the Registrant believes that filing a Form 10-Q report without financial information may be inconsistent with public interest and protection of investors.

PART IV — OTHER INFORMATION

(1)	Name and telephone number of person to contact in regard to this notification
	Joe Ragan	703	502-2772
	(Name)	(Area Code)	(Telephone Number)
(2)	Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed ? If answer is no, identify report(s).
			o Yes    x No
	Form 10-Q for the three months ending June 30, 2006
(3)	Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?
			o Yes    x No
	If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

GTSI Corp.

(Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.

Date November 13, 2006 By /s/ Joe Ragan

INSTRUCTION: The form may be signed by an executive officer of the registrant or by any other duly authorized representative. The name and title of the person signing the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized representative (other than an executive officer), evidence of the representative’s authority to sign on behalf of the registrant shall be filed with the form.

	ATTENTION
Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).