<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM EMC
CORPORATION FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                         678,767
<SECURITIES>                                   579,057
<RECEIVABLES>                                1,260,744
<ALLOWANCES>                                    13,061
<INVENTORY>                                    529,857
<CURRENT-ASSETS>                             3,197,400
<PP&E>                                         770,549
<DEPRECIATION>                                 475,324
<TOTAL-ASSETS>                               5,657,823
<CURRENT-LIABILITIES>                          816,524
<BONDS>                                        491,636
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        10,175
<OTHER-SE>                                   4,253,242
<TOTAL-LIABILITY-AND-EQUITY>                 5,657,823
<SALES>                                      3,509,928
<TOTAL-REVENUES>                             3,753,434
<CGS>                                        1,664,840
<TOTAL-COSTS>                                2,725,403
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               6,138
<INCOME-PRETAX>                              1,092,169
<INCOME-TAX>                                   273,043
<INCOME-CONTINUING>                            819,126
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   819,126
<EPS-BASIC>                                        .81
<EPS-DILUTED>                                      .76