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): May 21, 2002

                                  Hadron, Inc.

             (Exact name of registrant as specified in its charter)


           New York                        0-5404               11-2120726
- ----------------------------     ------------------------    -------------------
(State or other jurisdiction     (Commission File Number)      (IRS Employer
     of incorporation)                                       Identification No.)

             5904 Richmond Highway, Suite 300, Alexandria, VA  22309
            ---------------------------------------------------------
               (Address of principal executive offices)    (Zip Code)


                                 (703) 329-9400
              ----------------------------------------------------
              (Registrant's telephone number, including area code)


                                       N/A
       ------------------------------------------------------------------
              (Former name, former address and former fiscal year,
                          if changed since last report)





Item 5.   Other Events.

         Hadron, Inc. (OTC:BB:HDRN) issued a press release on May 21, 2002
regarding its Advanced Biosystems, Inc. subsidiary. A copy of the press release
is attached as an exhibit.

Item 7.   Financial Statements and Exhibits

          (c) Press Release dated May 21, 2002 is included herein as Exhibit 99.



                                   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, hereunto duly authorized.

                                              HADRON, INC.

Date:  May 22, 2002                           By:  /s/ Sterling Phillips
                                                   ----------------------------
                                                   Sterling Phillips
                                                   Chief Executive Officer



                                INDEX TO EXHIBITS

Exhibit No.       Exhibit

    99            Press Release dated May 21, 2002