<ARTICLE> 5
<LEGEND>
SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE FINANCIAL
STATEMENTS OF CITRIX SYSTEMS, INC. FOR THE PERIOD ENDED JUNE 30, 1999 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                                                  
<PERIOD-TYPE>                   3-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999             DEC-31-1999
<PERIOD-START>                             APR-01-1999             JAN-01-1999
<PERIOD-END>                               JUN-30-1999             JUN-30-1999
<CASH>                                         234,853                 234,853
<SECURITIES>                                    87,342                  87,342
<RECEIVABLES>                                   53,114                  53,114
<ALLOWANCES>                                     9,075                   9,075
<INVENTORY>                                      7,544                   7,544
<CURRENT-ASSETS>                               408,081                 408,081
<PP&E>                                          27,278                  27,278
<DEPRECIATION>                                  10,578                  10,578
<TOTAL-ASSETS>                                 847,417                 847,417
<CURRENT-LIABILITIES>                          119,015                 119,015
<BONDS>                                        305,851                 305,851
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                            88                      88
<OTHER-SE>                                     378,534                 378,534
<TOTAL-LIABILITY-AND-EQUITY>                   847,417                 847,417
<SALES>                                         94,415                 179,454
<TOTAL-REVENUES>                                94,415                 179,454
<CGS>                                            3,101                   7,622
<TOTAL-COSTS>                                    3,101                   7,622
<OTHER-EXPENSES>                                50,194                  93,558
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               4,081                   4,485
<INCOME-PRETAX>                                 43,414                  83,677
<INCOME-TAX>                                    15,629                  30,124
<INCOME-CONTINUING>                             27,785                  53,553
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    27,785                  53,553
<EPS-BASIC>                                       0.32                    0.62
<EPS-DILUTED>                                     0.29                    0.57