[ARTICLE] 6
[CIK] 0000874835
[NAME] GREENWICH STREET SERIES FUND
[SERIES]
   [NUMBER] 8
   [NAME] MONEY MARKET PORTFOLIO
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          DEC-31-1998
[PERIOD-END]                               DEC-31-1998
[INVESTMENTS-AT-COST]                        4,693,247
[INVESTMENTS-AT-VALUE]                       4,693,247
[RECEIVABLES]                                   15,931
[ASSETS-OTHER]                                   3,647
[OTHER-ITEMS-ASSETS]                             9,162
[TOTAL-ASSETS]                               4,721,987
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                       50,750
[TOTAL-LIABILITIES]                             50,750
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                     4,666,566
[SHARES-COMMON-STOCK]                        4,666,566
[SHARES-COMMON-PRIOR]                        4,407,799
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                             59
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                             0
[NET-ASSETS]                                 4,671,237
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                              272,329
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                  61,108
[NET-INVESTMENT-INCOME]                        211,221
[REALIZED-GAINS-CURRENT]                            59
[APPREC-INCREASE-CURRENT]                            0
[NET-CHANGE-FROM-OPS]                          211,280
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      211,280
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                      8,425,171
[NUMBER-OF-SHARES-REDEEMED]                  8,718,390
[SHARES-REINVESTED]                            211,918
[NET-CHANGE-IN-ASSETS]                         (81,301)
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                           24,459
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                 61,108
[AVERAGE-NET-ASSETS]                         4,914,460
[PER-SHARE-NAV-BEGIN]                            1.000
[PER-SHARE-NII]                                  0.043
[PER-SHARE-GAIN-APPREC]                              0
[PER-SHARE-DIVIDEND]                            (0.043)
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              1.000
[EXPENSE-RATIO]                                   1.25
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>