<ARTICLE>                     5
<CIK>                         0000050420
<NAME>                        INFODATA SYSTEMS INC
<MULTIPLIER>                  1000
<CURRENCY>                    U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                              DEC-31-1997
<PERIOD-START>                                 JAN-01-1997
<PERIOD-END>                                   SEP-30-1997
<EXCHANGE-RATE>                                          1
<CASH>                                                 278
<SECURITIES>                                           425
<RECEIVABLES>                                         2299
<ALLOWANCES>                                            80
<INVENTORY>                                              0
<CURRENT-ASSETS>                                      3156
<PP&E>                                                5494
<DEPRECIATION>                                        2136
<TOTAL-ASSETS>                                        6514
<CURRENT-LIABILITIES>                                 4048
<BONDS>                                                 87
<PREFERRED-MANDATORY>                                    0
<PREFERRED>                                              0
<COMMON>                                                82
<OTHER-SE>                                            2297
<TOTAL-LIABILITY-AND-EQUITY>                          6514
<SALES>                                               7033
<TOTAL-REVENUES>                                      7033
<CGS>                                                 4037
<TOTAL-COSTS>                                         3920
<OTHER-EXPENSES>                                      1642
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                      18
<INCOME-PRETAX>                                      (2584)
<INCOME-TAX>                                            (5)
<INCOME-CONTINUING>                                  (2579)
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                         (2579)
<EPS-PRIMARY>                                         (.92)
<EPS-DILUTED>                                         (.92)