MFS SERIES TRUST V
NSAR-B, 1999-11-24
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<PAGE>      PAGE  1
000 B000000 09/30/99
000 C000000 0000200489
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 MFS SERIES TRUST V
001 B000000 811-2031
001 C000000 6179545000
002 A000000 500 BOYLSTON STREET
002 B000000 BOSTON
002 C000000 MA
002 D010000 02116
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  5
007 C010100  1
007 C020100 MFS TOTAL RETURN FUND
007 C030100 N
007 C010200  2
007 C020200 MFS RESEARCH FUND
007 C030200 N
007 C010300  3
007 C020300 MFS INTERNATIONAL OPPORTUNITIES FUND
007 C030300 N
007 C010400  4
007 C020400 MFS INTERNATIONAL STRATEGIC GROWTH FUND
007 C030400 N
007 C010500  5
007 C020500 MFS INTERNATIONAL VALUE FUND
007 C030500 N
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A00AA01 MASSACHUSETTS FINANCIAL SERVICES COMPANY
008 B00AA01 A
008 C00AA01 801-17352
008 D01AA01 BOSTON
008 D02AA01 MA
008 D03AA01 02116
010 A00AA01 MASSACHUSETTS FINANCIAL SERVICES COMPANY
010 B00AA01 801-17352
010 C01AA01 BOSTON
<PAGE>      PAGE  2
010 C02AA01 MA
010 C03AA01 02116
011 A00AA01 MFS FUND DISTRIBUTORS, INC.
011 B00AA01 8-27864
011 C01AA01 BOSTON
011 C02AA01 MA
011 C03AA01 02116
012 A00AA01 MFS SERVICE CENTER, INC.
012 B00AA01 84-1316
012 C01AA01 BOSTON
012 C02AA01 MA
012 C03AA01 02111
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   53
019 C00AA00 MASSFINSER
020 A000001 MERRILL LYNCH PIERCE FENNER & SMITH
020 B000001 13-5674085
020 C000001   2753
020 A000002 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
020 B000002 13-2741729
020 C000002   2153
020 A000003 MORGAN STANLEY & CO., INC.
020 B000003 13-2655998
020 C000003   1938
020 A000004 SALOMON SMITH BARNEY, INC.
020 B000004 13-3082694
020 C000004   1361
020 A000005 A G EDWARDS & SONS INC
020 B000005 43-0895447
020 C000005   1114
020 A000006 PAINE WEBBER INC.
020 B000006 13-2638166
020 C000006    630
020 A000007 C.S. FIRST BOSTON CORP.
020 B000007 13-5659485
020 C000007    615
020 A000008 PRUDENTIAL SECURITIES, INC.
020 B000008 22-2347336
020 C000008    600
020 A000009 GOLDMAN SACHS & CO.
020 B000009 13-5108880
020 C000009    570
020 A000010 J.P. MORGAN SECURITIES,INC.
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<PAGE>      PAGE  3
022 A000002 MERRILL LYNCH PIERCE FENNER & SMITH
022 B000002 13-2655998
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022 B000003 13-3082694
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022 B000004 22-2347336
022 C000004   1414835
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022 A000005 LEHMAN BROTHERS, INC.
022 B000005 13-2518466
022 C000005    964155
022 D000005    873042
022 A000006 GOLDMAN SACHS & CO.
022 B000006 13-5108880
022 C000006   1242545
022 D000006    310279
022 A000007 GENERAL ELECTRIC CAPITAL CORP.
022 B000007 06-1362678
022 C000007   1542791
022 D000007         0
022 A000008 BANK OF BOSTON - DEALER
022 B000008 04-2472499
022 C000008   1196997
022 D000008    386216
022 A000009 CIT GROUP HOLDINGS, INC.
022 B000009 00-0000000
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022 A000010 WARBURG DILLON & READ, LLC
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026 H000000 N
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054 A00AA00 Y
054 B00AA00 N
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<PAGE>      PAGE  4
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 N
054 M00AA00 Y
054 N00AA00 N
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077 L000000 N
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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067  000100 Y
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068 B000100 N
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070 C010100 Y
070 C020100 N
070 D010100 Y
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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015 C020203 NY
015 C030203 10286
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<PAGE>      PAGE  12
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<PAGE>      PAGE  13
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
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<PAGE>      PAGE  18
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<PAGE>      PAGE  19
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<PAGE>      PAGE  20
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<PAGE>      PAGE  21
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<PAGE>      PAGE  22
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<PAGE>      PAGE  23
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<PAGE>      PAGE  24
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<PAGE>      PAGE  25
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<PAGE>      PAGE  26
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<PAGE>      PAGE  27
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<PAGE>      PAGE  28
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<PAGE>      PAGE  30
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<PAGE>      PAGE  31
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<PAGE>      PAGE  35
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SIGNATURE   JAMES O. YOST
TITLE       ASSISTANT TREASURER



<TABLE> <S> <C>

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<NAME> MFS SERIES TRUST V
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   <NAME> MFS TOTAL RETURN FUND CLASS A
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<TOTAL-LIABILITIES>                          440866760
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5974435907
<SHARES-COMMON-STOCK>                        253842933
<SHARES-COMMON-PRIOR>                        218137383
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (5393683)
<ACCUMULATED-NET-GAINS>                      393033256
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     110348059
<NET-ASSETS>                                6472423539
<DIVIDEND-INCOME>                             88663330
<INTEREST-INCOME>                            193993646
<OTHER-INCOME>                                (838689)
<EXPENSES-NET>                              (74050562)
<NET-INVESTMENT-INCOME>                      207767725
<REALIZED-GAINS-CURRENT>                     401496989
<APPREC-INCREASE-CURRENT>                    196021126
<NET-CHANGE-FROM-OPS>                        403788851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                  (129580179)
<DISTRIBUTIONS-OF-GAINS>                   (456637307)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      110586325
<NUMBER-OF-SHARES-REDEEMED>                (109828347)
<SHARES-REINVESTED>                           34947572
<NET-CHANGE-IN-ASSETS>                       632983815
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    753458252
<OVERDISTRIB-NII-PRIOR>                      (5960193)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         22547369
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               75135497
<AVERAGE-NET-ASSETS>                        6518238534
<PER-SHARE-NAV-BEGIN>                            16.06
<PER-SHARE-NII>                                   0.53
<PER-SHARE-GAIN-APPREC>                           0.56
<PER-SHARE-DIVIDEND>                            (0.51)
<PER-SHARE-DISTRIBUTIONS>                       (2.07)
<RETURNS-OF-CAPITAL>                             14.57
<PER-SHARE-NAV-END>                               0.89
<EXPENSE-RATIO>                                      0



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 012
   <NAME> MFS TOTAL RETURN FUND CLASS B
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                       6545132625
<INVESTMENTS-AT-VALUE>                      6657723172
<RECEIVABLES>                                255355302
<ASSETS-OTHER>                                   93651
<OTHER-ITEMS-ASSETS>                            118174
<TOTAL-ASSETS>                              6913290299
<PAYABLE-FOR-SECURITIES>                     389181369
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     51685391
<TOTAL-LIABILITIES>                          440866760
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5974435907
<SHARES-COMMON-STOCK>                        152175734
<SHARES-COMMON-PRIOR>                        123572332
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (5393683)
<ACCUMULATED-NET-GAINS>                      393033256
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     110348059
<NET-ASSETS>                                6472423539
<DIVIDEND-INCOME>                             88663330
<INTEREST-INCOME>                            193993646
<OTHER-INCOME>                                (838689)
<EXPENSES-NET>                              (74050562)
<NET-INVESTMENT-INCOME>                      207767725
<REALIZED-GAINS-CURRENT>                     401496989
<APPREC-INCREASE-CURRENT>                    196021126
<NET-CHANGE-FROM-OPS>                        403788851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   (59446051)
<DISTRIBUTIONS-OF-GAINS>                   (261186854)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                       38673047
<NUMBER-OF-SHARES-REDEEMED>                 (29991200)
<SHARES-REINVESTED>                           19921555
<NET-CHANGE-IN-ASSETS>                       632983815
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    753458252
<OVERDISTRIB-NII-PRIOR>                      (5960193)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         22547369
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               75135497
<AVERAGE-NET-ASSETS>                        6518238534
<PER-SHARE-NAV-BEGIN>                            16.05
<PER-SHARE-NII>                                   0.43
<PER-SHARE-GAIN-APPREC>                           0.58
<PER-SHARE-DIVIDEND>                            (0.42)
<PER-SHARE-DISTRIBUTIONS>                       (2.07)
<RETURNS-OF-CAPITAL>                             14.57
<PER-SHARE-NAV-END>                               1.54
<EXPENSE-RATIO>                                      0



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 013
   <NAME> MFS TOTAL RETURN FUND CLASS C
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                       6545132625
<INVESTMENTS-AT-VALUE>                      6657723172
<RECEIVABLES>                                255355302
<ASSETS-OTHER>                                   93651
<OTHER-ITEMS-ASSETS>                            118174
<TOTAL-ASSETS>                              6913290299
<PAYABLE-FOR-SECURITIES>                     389181369
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     51685391
<TOTAL-LIABILITIES>                          440866760
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5974435907
<SHARES-COMMON-STOCK>                         34761005
<SHARES-COMMON-PRIOR>                         20850631
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (5393683)
<ACCUMULATED-NET-GAINS>                      393033256
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     110348059
<NET-ASSETS>                                6472423539
<DIVIDEND-INCOME>                             88663330
<INTEREST-INCOME>                            193993646
<OTHER-INCOME>                                (838689)
<EXPENSES-NET>                              (74050562)
<NET-INVESTMENT-INCOME>                      207767725
<REALIZED-GAINS-CURRENT>                     401496989
<APPREC-INCREASE-CURRENT>                    196021126
<NET-CHANGE-FROM-OPS>                        403788851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   (11895158)
<DISTRIBUTIONS-OF-GAINS>                    (46940472)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                       17496762
<NUMBER-OF-SHARES-REDEEMED>                  (7147794)
<SHARES-REINVESTED>                            3561406
<NET-CHANGE-IN-ASSETS>                       632983815
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    753458252
<OVERDISTRIB-NII-PRIOR>                      (5960193)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         22547369
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               75135497
<AVERAGE-NET-ASSETS>                        6518238534
<PER-SHARE-NAV-BEGIN>                            16.10
<PER-SHARE-NII>                                   0.43
<PER-SHARE-GAIN-APPREC>                           0.57
<PER-SHARE-DIVIDEND>                            (0.42)
<PER-SHARE-DISTRIBUTIONS>                       (2.07)
<RETURNS-OF-CAPITAL>                             14.61
<PER-SHARE-NAV-END>                               1.54
<EXPENSE-RATIO>                                      0



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 014
   <NAME> MFS TOTAL RETURN FUND CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                       6545132625
<INVESTMENTS-AT-VALUE>                      6657723172
<RECEIVABLES>                                255355302
<ASSETS-OTHER>                                   93651
<OTHER-ITEMS-ASSETS>                            118174
<TOTAL-ASSETS>                              6913290299
<PAYABLE-FOR-SECURITIES>                     389181369
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                     51685391
<TOTAL-LIABILITIES>                          440866760
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    5974435907
<SHARES-COMMON-STOCK>                          3295214
<SHARES-COMMON-PRIOR>                          1078479
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                       (5393683)
<ACCUMULATED-NET-GAINS>                      393033256
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                     110348059
<NET-ASSETS>                                6472423539
<DIVIDEND-INCOME>                             88663330
<INTEREST-INCOME>                            193993646
<OTHER-INCOME>                                (838689)
<EXPENSES-NET>                              (74050562)
<NET-INVESTMENT-INCOME>                      207767725
<REALIZED-GAINS-CURRENT>                     401496989
<APPREC-INCREASE-CURRENT>                    196021126
<NET-CHANGE-FROM-OPS>                        403788851
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (975400)
<DISTRIBUTIONS-OF-GAINS>                     (2276517)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        2364510
<NUMBER-OF-SHARES-REDEEMED>                   (367947)
<SHARES-REINVESTED>                             220172
<NET-CHANGE-IN-ASSETS>                       632983815
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    753458252
<OVERDISTRIB-NII-PRIOR>                      (5960193)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         22547369
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               75135497
<AVERAGE-NET-ASSETS>                        6518238534
<PER-SHARE-NAV-BEGIN>                            16.06
<PER-SHARE-NII>                                   0.58
<PER-SHARE-GAIN-APPREC>                           0.57
<PER-SHARE-DIVIDEND>                            (0.57)
<PER-SHARE-DISTRIBUTIONS>                       (2.07)
<RETURNS-OF-CAPITAL>                             14.57
<PER-SHARE-NAV-END>                               0.54
<EXPENSE-RATIO>                                      0



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 021
   <NAME> MFS RESEARCH FUND - CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                       5481302594
<INVESTMENTS-AT-VALUE>                      6697644159
<RECEIVABLES>                                139470736
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                            230830
<TOTAL-ASSETS>                              6837412312
<PAYABLE-FOR-SECURITIES>                      42484077
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    260126660
<TOTAL-LIABILITIES>                          302610737
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4736320143
<SHARES-COMMON-STOCK>                        119675882
<SHARES-COMMON-PRIOR>                        121774044
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                        (421998)
<ACCUMULATED-NET-GAINS>                      582534965
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    1216368465
<NET-ASSETS>                                6534801575
<DIVIDEND-INCOME>                             51985219
<INTEREST-INCOME>                              8531357
<OTHER-INCOME>                                (691288)
<EXPENSES-NET>                              (86273599)
<NET-INVESTMENT-INCOME>                     (26448311)
<REALIZED-GAINS-CURRENT>                     631686519
<APPREC-INCREASE-CURRENT>                    698181105
<NET-CHANGE-FROM-OPS>                       1303419313
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (116922157)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      129694128
<NUMBER-OF-SHARES-REDEEMED>                (136162282)
<SHARES-REINVESTED>                            4369992
<NET-CHANGE-IN-ASSETS>                      1104309772
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    224168427
<OVERDISTRIB-NII-PRIOR>                       (106481)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         27850677
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               87018144
<AVERAGE-NET-ASSETS>                        6579154518
<PER-SHARE-NAV-BEGIN>                            21.45
<PER-SHARE-NII>                                 (0.02)
<PER-SHARE-GAIN-APPREC>                           5.10
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.95)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              25.58
<EXPENSE-RATIO>                                   0.98



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 022
   <NAME> MFS RESEARCH FUND - CLASS B
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                       5481302594
<INVESTMENTS-AT-VALUE>                      6697644159
<RECEIVABLES>                                139470736
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                            230830
<TOTAL-ASSETS>                              6837412312
<PAYABLE-FOR-SECURITIES>                      42484077
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    260126660
<TOTAL-LIABILITIES>                          302610737
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4736320143
<SHARES-COMMON-STOCK>                        111314753
<SHARES-COMMON-PRIOR>                        107048695
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                        (421998)
<ACCUMULATED-NET-GAINS>                      582534965
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    1216368465
<NET-ASSETS>                                6534801575
<DIVIDEND-INCOME>                             51985219
<INTEREST-INCOME>                              8531357
<OTHER-INCOME>                                (691288)
<EXPENSES-NET>                              (86273599)
<NET-INVESTMENT-INCOME>                     (26448311)
<REALIZED-GAINS-CURRENT>                     631686519
<APPREC-INCREASE-CURRENT>                    698181105
<NET-CHANGE-FROM-OPS>                       1303419313
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                   (103235324)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                       23402859
<NUMBER-OF-SHARES-REDEEMED>                 (22892519)
<SHARES-REINVESTED>                            3755718
<NET-CHANGE-IN-ASSETS>                      1104309772
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    224168427
<OVERDISTRIB-NII-PRIOR>                       (106481)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         27850677
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               87018144
<AVERAGE-NET-ASSETS>                        6579154518
<PER-SHARE-NAV-BEGIN>                            20.90
<PER-SHARE-NII>                                 (0.18)
<PER-SHARE-GAIN-APPREC>                           4.97
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.95)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              24.74
<EXPENSE-RATIO>                                   1.63



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 023
   <NAME> MFS RESEARCH FUND - CLASS C
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                       5481302594
<INVESTMENTS-AT-VALUE>                      6697644159
<RECEIVABLES>                                139470736
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                            230830
<TOTAL-ASSETS>                              6837412312
<PAYABLE-FOR-SECURITIES>                      42484077
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    260126660
<TOTAL-LIABILITIES>                          302610737
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4736320143
<SHARES-COMMON-STOCK>                         28270737
<SHARES-COMMON-PRIOR>                         26942067
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                        (421998)
<ACCUMULATED-NET-GAINS>                      582534965
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    1216368465
<NET-ASSETS>                                6534801575
<DIVIDEND-INCOME>                             51985219
<INTEREST-INCOME>                              8531357
<OTHER-INCOME>                                (691288)
<EXPENSES-NET>                              (86273599)
<NET-INVESTMENT-INCOME>                     (26448311)
<REALIZED-GAINS-CURRENT>                     631686519
<APPREC-INCREASE-CURRENT>                    698181105
<NET-CHANGE-FROM-OPS>                       1303419313
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                    (25969746)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                       10513546
<NUMBER-OF-SHARES-REDEEMED>                  (9954748)
<SHARES-REINVESTED>                             769872
<NET-CHANGE-IN-ASSETS>                      1104309772
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    224168427
<OVERDISTRIB-NII-PRIOR>                       (106481)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         27850677
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               87018144
<AVERAGE-NET-ASSETS>                        6579154518
<PER-SHARE-NAV-BEGIN>                            20.92
<PER-SHARE-NII>                                 (0.18)
<PER-SHARE-GAIN-APPREC>                           4.96
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.95)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              24.75
<EXPENSE-RATIO>                                   1.63



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 024
   <NAME> MFS RESEARCH FUND - CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                       5481302594
<INVESTMENTS-AT-VALUE>                      6697644159
<RECEIVABLES>                                139470736
<ASSETS-OTHER>                                   66587
<OTHER-ITEMS-ASSETS>                            230830
<TOTAL-ASSETS>                              6837412312
<PAYABLE-FOR-SECURITIES>                      42484077
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    260126660
<TOTAL-LIABILITIES>                          302610737
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                    4736320143
<SHARES-COMMON-STOCK>                           756323
<SHARES-COMMON-PRIOR>                           815412
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                        (421998)
<ACCUMULATED-NET-GAINS>                      582534965
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    1216368465
<NET-ASSETS>                                6534801575
<DIVIDEND-INCOME>                             51985219
<INTEREST-INCOME>                              8531357
<OTHER-INCOME>                                (691288)
<EXPENSES-NET>                              (86273599)
<NET-INVESTMENT-INCOME>                     (26448311)
<REALIZED-GAINS-CURRENT>                     631686519
<APPREC-INCREASE-CURRENT>                    698181105
<NET-CHANGE-FROM-OPS>                       1303419313
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                      (767888)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          78641
<NUMBER-OF-SHARES-REDEEMED>                   (166608)
<SHARES-REINVESTED>                              28878
<NET-CHANGE-IN-ASSETS>                      1104309772
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                    224168427
<OVERDISTRIB-NII-PRIOR>                       (106481)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                         27850677
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                               87018144
<AVERAGE-NET-ASSETS>                        6579154518
<PER-SHARE-NAV-BEGIN>                            21.52
<PER-SHARE-NII>                                   0.07
<PER-SHARE-GAIN-APPREC>                           5.13
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                       (0.95)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              25.77
<EXPENSE-RATIO>                                   0.63



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 031
   <NAME> MFS INTERNATIONAL OPPORTUNITIES FUND - CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                          1121401
<INVESTMENTS-AT-VALUE>                         1151070
<RECEIVABLES>                                    23090
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              2378
<TOTAL-ASSETS>                                 1176545
<PAYABLE-FOR-SECURITIES>                         19739
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        50039
<TOTAL-LIABILITIES>                              69778
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        849878
<SHARES-COMMON-STOCK>                             9246
<SHARES-COMMON-PRIOR>                            60806
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                            (72)
<ACCUMULATED-NET-GAINS>                         227371
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         29590
<NET-ASSETS>                                   1106767
<DIVIDEND-INCOME>                                19055
<INTEREST-INCOME>                                 1559
<OTHER-INCOME>                                  (2331)
<EXPENSES-NET>                                 (20553)
<NET-INVESTMENT-INCOME>                         (2270)
<REALIZED-GAINS-CURRENT>                        245016
<APPREC-INCREASE-CURRENT>                       142028
<NET-CHANGE-FROM-OPS>                           384774
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       (1658)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            350
<NUMBER-OF-SHARES-REDEEMED>                    (52069)
<SHARES-REINVESTED>                                159
<NET-CHANGE-IN-ASSETS>                        (158507)
<ACCUMULATED-NII-PRIOR>                           4167
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                     (16602)
<GROSS-ADVISORY-FEES>                            11451
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  49366
<AVERAGE-NET-ASSETS>                           1174501
<PER-SHARE-NAV-BEGIN>                             9.42
<PER-SHARE-NII>                                 (0.01)
<PER-SHARE-GAIN-APPREC>                           3.78
<PER-SHARE-DIVIDEND>                            (0.04)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.15
<EXPENSE-RATIO>                                   1.78



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 032
   <NAME> MFS INTERNATIONAL OPPORTUNITIES FUND - CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                          1121401
<INVESTMENTS-AT-VALUE>                         1151070
<RECEIVABLES>                                    23090
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              2378
<TOTAL-ASSETS>                                 1176545
<PAYABLE-FOR-SECURITIES>                         19739
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        50039
<TOTAL-LIABILITIES>                              69778
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        849878
<SHARES-COMMON-STOCK>                            74874
<SHARES-COMMON-PRIOR>                            73457
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                            (72)
<ACCUMULATED-NET-GAINS>                         227371
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         29590
<NET-ASSETS>                                   1106767
<DIVIDEND-INCOME>                                19055
<INTEREST-INCOME>                                 1559
<OTHER-INCOME>                                  (2331)
<EXPENSES-NET>                                 (20553)
<NET-INVESTMENT-INCOME>                         (2270)
<REALIZED-GAINS-CURRENT>                        245016
<APPREC-INCREASE-CURRENT>                       142028
<NET-CHANGE-FROM-OPS>                           384774
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       (2828)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          24543
<NUMBER-OF-SHARES-REDEEMED>                    (23398)
<SHARES-REINVESTED>                                272
<NET-CHANGE-IN-ASSETS>                        (158507)
<ACCUMULATED-NII-PRIOR>                           4167
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                     (16602)
<GROSS-ADVISORY-FEES>                            11451
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  49366
<AVERAGE-NET-ASSETS>                           1174501
<PER-SHARE-NAV-BEGIN>                             9.42
<PER-SHARE-NII>                                 (0.03)
<PER-SHARE-GAIN-APPREC>                           3.81
<PER-SHARE-DIVIDEND>                            (0.04)
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.16
<EXPENSE-RATIO>                                   1.78



</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 041
   <NAME> MFS INTERNATIONAL STRATEGIC GROWTH FUND CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                          1239145
<INVESTMENTS-AT-VALUE>                         1271850
<RECEIVABLES>                                    10723
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              4666
<TOTAL-ASSETS>                                 1287246
<PAYABLE-FOR-SECURITIES>                         18616
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           60
<TOTAL-LIABILITIES>                              18676
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        967125
<SHARES-COMMON-STOCK>                            18840
<SHARES-COMMON-PRIOR>                             9282
<ACCUMULATED-NII-CURRENT>                          822
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         267898
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         32725
<NET-ASSETS>                                   1268570
<DIVIDEND-INCOME>                                19436
<INTEREST-INCOME>                                 3232
<OTHER-INCOME>                                  (2396)
<EXPENSES-NET>                                 (18141)
<NET-INVESTMENT-INCOME>                           2131
<REALIZED-GAINS-CURRENT>                        270480
<APPREC-INCREASE-CURRENT>                        84982
<NET-CHANGE-FROM-OPS>                           357593
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        (335)
<DISTRIBUTIONS-OF-GAINS>                        (2982)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                           9673
<NUMBER-OF-SHARES-REDEEMED>                      (435)
<SHARES-REINVESTED>                                320
<NET-CHANGE-IN-ASSETS>                          302850
<ACCUMULATED-NII-PRIOR>                           1788
<ACCUMULATED-GAINS-PRIOR>                        31247
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            10108
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  49837
<AVERAGE-NET-ASSETS>                           1036612
<PER-SHARE-NAV-BEGIN>                             9.68
<PER-SHARE-NII>                                   0.05
<PER-SHARE-GAIN-APPREC>                           4.08
<PER-SHARE-DIVIDEND>                            (0.04)
<PER-SHARE-DISTRIBUTIONS>                       (0.33)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.44
<EXPENSE-RATIO>                                   1.78


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 042
   <NAME> MFS INTERNATIONAL STRATEGIC GROWTH FUND CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                          1239145
<INVESTMENTS-AT-VALUE>                         1271850
<RECEIVABLES>                                    10723
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              4666
<TOTAL-ASSETS>                                 1287246
<PAYABLE-FOR-SECURITIES>                         18616
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           60
<TOTAL-LIABILITIES>                              18676
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        967125
<SHARES-COMMON-STOCK>                            75343
<SHARES-COMMON-PRIOR>                            90307
<ACCUMULATED-NII-CURRENT>                          822
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         267898
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                         32725
<NET-ASSETS>                                   1268570
<DIVIDEND-INCOME>                                19436
<INTEREST-INCOME>                                 3232
<OTHER-INCOME>                                  (2396)
<EXPENSES-NET>                                 (18141)
<NET-INVESTMENT-INCOME>                           2131
<REALIZED-GAINS-CURRENT>                        270480
<APPREC-INCREASE-CURRENT>                        84982
<NET-CHANGE-FROM-OPS>                           357593
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                       (3397)
<DISTRIBUTIONS-OF-GAINS>                       (30212)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          26952
<NUMBER-OF-SHARES-REDEEMED>                    (45157)
<SHARES-REINVESTED>                               3241
<NET-CHANGE-IN-ASSETS>                          302850
<ACCUMULATED-NII-PRIOR>                           1788
<ACCUMULATED-GAINS-PRIOR>                        31247
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            10108
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  49837
<AVERAGE-NET-ASSETS>                           1036612
<PER-SHARE-NAV-BEGIN>                             9.70
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                           4.13
<PER-SHARE-DIVIDEND>                            (0.04)
<PER-SHARE-DISTRIBUTIONS>                       (0.33)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.48
<EXPENSE-RATIO>                                   1.78


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 051
   <NAME> MFS INTERNATIONAL VALUE FUND CLASS A
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                          1071450
<INVESTMENTS-AT-VALUE>                         1173323
<RECEIVABLES>                                    11728
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              2311
<TOTAL-ASSETS>                                 1187369
<PAYABLE-FOR-SECURITIES>                         53436
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           54
<TOTAL-LIABILITIES>                              53490
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        811701
<SHARES-COMMON-STOCK>                            70135
<SHARES-COMMON-PRIOR>                            95755
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                           (666)
<ACCUMULATED-NET-GAINS>                         221069
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        101775
<NET-ASSETS>                                   1133879
<DIVIDEND-INCOME>                                19519
<INTEREST-INCOME>                                 3475
<OTHER-INCOME>                                  (2053)
<EXPENSES-NET>                                 (20846)
<NET-INVESTMENT-INCOME>                             95
<REALIZED-GAINS-CURRENT>                        234923
<APPREC-INCREASE-CURRENT>                        75336
<NET-CHANGE-FROM-OPS>                           310354
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                        10246
<DISTRIBUTIONS-OF-GAINS>                         20108
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            279
<NUMBER-OF-SHARES-REDEEMED>                    (28592)
<SHARES-REINVESTED>                               2693
<NET-CHANGE-IN-ASSETS>                           19536
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                         8745
<OVERDISTRIB-NII-PRIOR>                        (10713)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            11597
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  47730
<AVERAGE-NET-ASSETS>                           1191186
<PER-SHARE-NAV-BEGIN>                            10.46
<PER-SHARE-NII>                                      0
<PER-SHARE-GAIN-APPREC>                           3.10
<PER-SHARE-DIVIDEND>                            (0.11)
<PER-SHARE-DISTRIBUTIONS>                       (0.21)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.24
<EXPENSE-RATIO>                                   1.77


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000200489
<NAME> MFS SERIES TRUST V
<SERIES>
   <NUMBER> 052
   <NAME> MFS INTERNATIONAL VALUE FUND CLASS I
<MULTIPLIER> 1

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-START>                             OCT-01-1998
<PERIOD-END>                               SEP-30-1999
<INVESTMENTS-AT-COST>                          1071450
<INVESTMENTS-AT-VALUE>                         1173323
<RECEIVABLES>                                    11728
<ASSETS-OTHER>                                       7
<OTHER-ITEMS-ASSETS>                              2311
<TOTAL-ASSETS>                                 1187369
<PAYABLE-FOR-SECURITIES>                         53436
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           54
<TOTAL-LIABILITIES>                              53490
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        811701
<SHARES-COMMON-STOCK>                            15488
<SHARES-COMMON-PRIOR>                            10745
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                           (666)
<ACCUMULATED-NET-GAINS>                         221069
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        101775
<NET-ASSETS>                                   1133879
<DIVIDEND-INCOME>                                19519
<INTEREST-INCOME>                                 3475
<OTHER-INCOME>                                  (2053)
<EXPENSES-NET>                                 (20846)
<NET-INVESTMENT-INCOME>                             95
<REALIZED-GAINS-CURRENT>                        234923
<APPREC-INCREASE-CURRENT>                        75336
<NET-CHANGE-FROM-OPS>                           310354
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                         1255
<DISTRIBUTIONS-OF-GAINS>                          2464
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                           6036
<NUMBER-OF-SHARES-REDEEMED>                     (1623)
<SHARES-REINVESTED>                                330
<NET-CHANGE-IN-ASSETS>                           19536
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                         8745
<OVERDISTRIB-NII-PRIOR>                        (10713)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            11597
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  47730
<AVERAGE-NET-ASSETS>                           1191186
<PER-SHARE-NAV-BEGIN>                            10.47
<PER-SHARE-NII>                                   0.01
<PER-SHARE-GAIN-APPREC>                           3.09
<PER-SHARE-DIVIDEND>                            (0.11)
<PER-SHARE-DISTRIBUTIONS>                       (0.21)
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.25
<EXPENSE-RATIO>                                   1.77


</TABLE>

INDEPENDENT AUDITORS' REPORT


To the Trustees and Shareholders of MFS Series Trust V:

In planning and performing  our audits of the financial  statements of MFS Total
Return Fund and MFS Research  Fund (series of MFS Series Trust V) (the  "Funds")
for the year ended September 30, 1999 (on which we have issued our reports dated
November 4, 1999),  we considered  their  internal  control,  including  control
activities  for  safeguarding  securities,  in order to  determine  our auditing
procedures  for  the  purpose  of  expressing  our  opinions  on  the  financial
statements and to comply with the requirements of Form N-SAR, and not to provide
assurance on the Funds' internal control.

The management of the Funds are  responsible  for  establishing  and maintaining
internal control. In fulfilling this responsibility,  estimates and judgments by
management  are  required to assess the expected  benefits and related  costs of
controls.  Generally,  controls  that are  relevant  to an audit  pertain to the
entity's objective of preparing financial  statements for external purposes that
are  fairly   presented  in  conformity  with  generally   accepted   accounting
principles.   Those  controls   include  the   safeguarding  of  assets  against
unauthorized acquisition, use or disposition.

Because of inherent  limitations in any internal  control,  misstatements due to
error  or  fraud  may  occur  and  not be  detected.  Also,  projections  of any
evaluation  of internal  control to future  periods are subject to the risk that
the internal control may become  inadequate  because of changes in conditions or
that the degree of compliance with policies or procedures deteriorates.

Our consideration of the Funds' internal control would not necessarily  disclose
all  matters  in  internal  control  that  might be  material  weaknesses  under
standards established by the American Institute of Certified Public Accountants.
A material  weakness is a condition  in which the design or  operation of one or
more of the internal  control  components  does not reduce to a  relatively  low
level the risk that misstatements caused by error or fraud in amounts that would
be material in relation to the financial  statements being audited may occur and
not be detected  within a timely  period by  employees  in the normal  course of
performing their assigned functions.  However, we noted no matters involving the
Funds' internal control and its operation,  including  controls for safeguarding
securities  that we consider to be material  weaknesses  as defined  above as of
September 30, 1999.

This report is intended solely for the  information  and use of management,  the
Board  of  Trustees,  and the  Securities  and  Exchange  Commission  and is not
intended  to be and  should not be used by anyone  other  than  these  specified
parties.

DELOITTE & TOUCHE LLP

Boston, Massachusetts
November 4, 1999



                         Report of Independent Auditors


To the Trustees
MFS Series Trust V

In  planning  and  performing  our  audits  of  the  financial   statements  MFS
International  Opportunities Fund, MFS International  Strategic Growth Fund, and
MFS International Value Fund ("the funds") three of the funds comprising the MFS
Series  Trust V, for the year  ended  September  30,  1999,  we  considered  its
internal control,  including control activities for safeguarding securities,  in
order to determine our auditing  procedures  for the purpose of  expressing  our
opinion on the financial  statements and to comply with the requirements of Form
N-SAR, not to provide assurance on internal control.

The  management of the Funds is responsible  for  establishing  and  maintaining
internal control. In fulfilling this responsibility,  estimates and judgments by
management  are  required to assess the expected  benefits and related  costs of
controls.  Generally,  controls  that are  relevant  to an audit  pertain to the
entity's objective of preparing financial  statements for external purposes that
are  fairly   presented  in  conformity  with  generally   accepted   accounting
principles.   Those  controls   include  the   safeguarding  of  assets  against
unauthorized acquisition, use or disposition.

Because of inherent  limitations in internal  control,  error or fraud may occur
and not be detected.  Also,  projection of any evaluation of internal control to
future periods is subject to the risk that it may become  inadequate  because of
changes in conditions or that the  effectiveness of the design and operation may
deteriorate.

Our consideration of internal control would not necessarily disclose all matters
in  internal   control  that  might  be  material   weaknesses  under  standards
established  by the  American  Institute  of  Certified  Public  Accountants.  A
material weakness is a condition in which the design or operation of one or more
of the internal control components does not reduce to a relatively low level the
risk  that  misstatements  caused  by error or fraud in  amounts  that  would be
material in relation to the financial statements being audited may occur and not
be  detected  within a timely  period  by  employees  in the  normal  course  of
performing  their assigned  functions.  However,  we noted no matters  involving
internal  control  and  its  operation,   including  controls  for  safeguarding
securities,  that we  consider  to be material  weaknesses  as defined  above at
September 30, 1999.

This report is intended solely for the  information  and use of management,  the
Board  of  Trustees  of MFS  Series  Trust V, and the  Securities  and  Exchange
Commission and is not intended to be and should not be used by anyone other than
these specified parties.



                                                              ERNST & YOUNG LLP
November 9, 1999





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