MFS VARIABLE INSURANCE TRUST
NSAR-A, 1997-08-22
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<PAGE>      PAGE  1
000 A000000 06/30/97
000 C000000 0000918571
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 VARIABLE INSURANCE TRUST
001 B000000 811-8326
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 12
007 C010100  1
007 C020100 MFS WORLD GOVERNMENTS SERIES
007 C030100 N
007 C010200  2
007 C020200 MFS TOTAL RETURN SERIES
007 C030200 N
007 C010300  3
007 C020300 MFS UTILITIES SERIES
007 C030300 N
007 C010400  4
007 C020400 MFS MONEY MARKET SERIES
007 C030400 N
007 C010500  5
007 C020500 MFS GROWTH WITH INCOME SERIES
007 C030500 N
007 C010600  6
007 C020600 MFS VALUE SERIES
007 C030600 N
007 C010700  7
007 C020700 MFS EMERGING GROWTH SERIES
007 C030700 N
007 C010800  8
007 C020800 MFS LIMITED MATURITY SERIES
007 C030800 N
007 C010900  9
007 C020900 MFS BOND SERIES
007 C030900 N
007 C011000 10
007 C021000 MFS STRATEGIC FIXED INCOME SERIES
<PAGE>      PAGE  2
007 C031000 N
007 C011100 11
007 C021100 MFS HIGH INCOME SERIES
007 C031100 N
007 C011200 12
007 C021200 MFS RESEARCH SERIES
007 C031200 N
007 C011300 13
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
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 C01AA01 BOSTON
010 C02AA01 MA
010 C03AA01 02116
011 A00AA01 MFS FUNDS 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 02116
013 A00AA01 DELOITTE & TOUCHE LLP
013 B01AA01 BOSTON
013 B02AA01 MA
013 B03AA01 02110
015 A00AA01 INVESTORS BANK AND TRUST COMPANY
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02111
015 E01AA01 X
015 A00AA02 BANK OF NEW YORK
015 B00AA02 S
015 C01AA02 NEW YORK
015 C02AA02 NY
015 C03AA02 10286
015 E01AA02 X
<PAGE>      PAGE  3
015 A00AA03 CHASE MANHATTAN BANK, N.A.
015 B00AA03 S
015 C01AA03 NEW YORK
015 C02AA03 NY
015 C03AA03 10081
015 E04AA03 X
018  00AA00 Y
019 A00AA00 N
019 B00AA00    0
020 A000001 MERRILL LYNCH
020 B000001 13-5674085
020 C000001     48
020 A000002 MORGAN STANLEY
020 B000002 13-2655998
020 C000002     55
020 A000003 PERSHING
020 B000003 13-2741729
020 C000003     32
020 A000004 COWENE & CO.
020 B000004 00-0000000
020 C000004     22
020 A000005 SMITH BARNEYEY
020 B000005 13-1912900
020 C000005     21
020 A000006 BERNSTEIN
020 B000006 13-2625874
020 C000006     16
020 A000007 GOLDMAN SACHS
020 B000007 13-5108880
020 C000007     16
020 A000008 WEEDEN
020 B000008 13-3364318
020 C000008     15
020 A000009 SALOMON BROTHERS
020 B000009 13-3082694
020 C000009     15
020 A000010 SCHWAB
020 B000010 00-0000000
020 C000010     14
021  000000      536
022 A000001 LEHMAN BROTHERS
022 B000001 13-2518466
022 C000001    860717
022 D000001     48567
022 A000002 GOLDMAN SACHS
022 B000002 13-5108880
022 C000002    317084
022 D000002     36011
022 A000003 PRUDENTIAL BACHE
022 B000003 22-2347336
022 C000003    300134
<PAGE>      PAGE  4
022 D000003      1366
022 A000004 CS FIRST BOSTON
022 B000004 13-5659485
022 C000004    217837
022 D000004     36777
022 A000005 HSBC SECURITIES
022 B000005 00-0000000
022 C000005    147861
022 D000005     28830
022 A000006 MERRILL LYNCH
022 B000006 13-5674085
022 C000006    113220
022 D000006     49411
022 A000007 NATIONSBANK
022 B000007 75-0520130
022 C000007    131415
022 D000007      1705
022 A000008 SWISS BANK CORP.
022 B000008 00-0000000
022 C000008     85674
022 D000008     46013
022 A000009 MORGANL LYNCH
022 B000009 13-2655998
022 C000009     70769
022 D000009     41408
022 A000010 CHASE MANHATTAN
022 B000010 13-3112953
022 C000010     77456
022 D000010     12327
023 C000000    2686191
023 D000000     474547
026 A000000 N
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<PAGE>      PAGE  5
036 B00AA00      0
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039  00AA00 Y
040  00AA00 N
054 A00AA00 Y
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054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 Y
054 I00AA00 N
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054 K00AA00 N
054 L00AA00 N
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077 A000000 Y
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<PAGE>      PAGE  6
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050  000100 N
051  000100 N
052  000100 N
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053 B000100 Y
053 C000100 Y
055 A000100 N
055 B000100 N
056  000100 Y
057  000100 N
058 A000100 N
059  000100 Y
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<PAGE>      PAGE  7
062 G000100   0.0
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062 M000100  14.3
062 N000100  21.1
062 O000100   0.0
062 P000100   0.0
062 Q000100  39.3
062 R000100   0.0
063 A000100   0
063 B000100  4.8
064 A000100 N
064 B000100 N
066 A000100 N
067  000100 N
068 A000100 N
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069  000100 N
070 A010100 Y
070 A020100 N
070 B010100 Y
070 B020100 N
070 C010100 Y
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 Y
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 Y
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 N
070 K010100 Y
070 K020100 N
070 L010100 Y
070 L020100 Y
070 M010100 Y
070 M020100 Y
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
<PAGE>      PAGE  8
070 P010100 Y
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
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072CC010100        0
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072DD010100      490
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072EE000100      222
073 A010100   0.1700
073 A020100   0.0000
073 B000100   0.0800
073 C000100   0.0000
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074 C000100     6882
074 D000100    25267
<PAGE>      PAGE  9
074 E000100        0
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074 L000100     1048
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074 N000100    34503
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074 R040100      688
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074 T000100    33812
074 U010100     3331
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074 X000100       23
074 Y000100        0
075 A000100        0
075 B000100    29876
076  000100     0.00
024  000200 Y
025 A000201 BANK OF NEW YORK
025 B000201 00-0000000
025 C000201 E
025 D000201     264
025 A000202 CHASE MANHATTANK
025 B000202 13-3112953
025 C000202 E
025 D000202     258
025 A000203 EDWARDS (AG)
025 B000203 00-0000000
025 C000203 E
025 D000203      22
025 A000204 HSBC SECURITIES
025 B000204 00-0000000
025 C000204 D
025 D000204      20
025 A000205 LEHMAN
025 B000205 13-2518466
025 C000205 D
025 D000205      10
025 A000206 NATIONSBANK
<PAGE>      PAGE  10
025 B000206 75-0520130
025 C000206 E
025 D000206     386
025 A000207 NATIONWIDE
025 B000207 00-0000000
025 C000207 E
025 D000207     117
025 D000208       0
028 A010200      2443
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045  000200 Y
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048 B020200 0.000
048 C010200        0
048 C020200 0.000
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<PAGE>      PAGE  11
048 F010200        0
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048 I010200        0
048 I020200 0.000
048 J010200        0
048 J020200 0.000
048 K010200        0
048 K020200 0.000
049  000200 N
050  000200 N
051  000200 N
052  000200 N
053 A000200 Y
053 B000200 Y
053 C000200 N
055 A000200 N
055 B000200 N
056  000200 Y
057  000200 N
058 A000200 N
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066 A000200 Y
066 B000200 N
066 C000200 N
066 D000200 N
066 E000200 N
<PAGE>      PAGE  12
066 F000200 N
066 G000200 Y
067  000200 Y
068 A000200 N
068 B000200 N
069  000200 N
070 A010200 Y
070 A020200 N
070 B010200 Y
070 B020200 N
070 C010200 Y
070 C020200 N
070 D010200 Y
070 D020200 N
070 E010200 Y
070 E020200 N
070 F010200 Y
070 F020200 N
070 G010200 Y
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 Y
070 K010200 Y
070 K020200 N
070 L010200 Y
070 L020200 Y
070 M010200 Y
070 M020200 Y
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070 Q020200 N
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071 A000200     30675
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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045  000300 Y
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<PAGE>      PAGE  15
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050  000300 N
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056  000300 Y
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059  000300 Y
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<PAGE>      PAGE  16
062 Q000300   0.0
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<PAGE>      PAGE  17
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<PAGE>      PAGE  18
074 M000300        5
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<PAGE>      PAGE  19
045  000400 Y
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<PAGE>      PAGE  21
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<PAGE>      PAGE  24
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<PAGE>      PAGE  29
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<PAGE>      PAGE  30
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<PAGE>      PAGE  31
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<PAGE>      PAGE  34
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<PAGE>      PAGE  38
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072 M000800        1
072 N000800        0
072 O000800        0
072 P000800        0
072 Q000800        0
072 R000800       10
072 S000800        0
072 T000800        0
072 U000800        1
072 V000800        0
072 W000800        0
072 X000800       19
072 Y000800       16
072 Z000800       16
072AA000800        0
072BB000800        1
072CC010800        0
072CC020800        1
072DD010800        0
072DD020800        0
072EE000800        0
073 A010800   0.0000
073 A020800   0.0000
073 B000800   0.0000
073 C000800   0.0000
074 A000800        2
074 B000800        0
074 C000800       90
074 D000800      477
074 E000800        0
074 F000800        0
074 G000800        0
074 H000800        0
074 I000800        0
074 J000800        0
074 K000800        7
074 L000800       10
<PAGE>      PAGE  39
074 M000800        8
074 N000800      594
074 O000800        0
074 P000800        0
074 Q000800        0
074 R010800        0
074 R020800        0
074 R030800        0
074 R040800        8
074 S000800        0
074 T000800      586
074 U010800       57
074 U020800        0
074 V010800    10.27
074 V020800     0.00
074 W000800   0.0000
074 X000800        9
074 Y000800        0
075 A000800        0
075 B000800      544
076  000800     0.00
024  000900 Y
025 A000901 HSBC SECURITIES
025 B000901 00-0000000
025 C000901 D
025 D000901       5
025 A000902 LEHMAN BROTHERS
025 B000902 13-2518466
025 C000902 D
025 D000902      10
025 A000903 NATIONWIDE
025 B000903 00-0000000
025 C000903 E
025 D000903       9
025 D000904       0
025 D000905       0
025 D000906       0
025 D000907       0
025 D000908       0
028 A010900        30
028 A020900         0
028 A030900         0
028 A040900         2
028 B010900       178
028 B020900         0
028 B030900         0
028 B040900        15
028 C010900       260
028 C020900         0
028 C030900         0
028 C040900         9
<PAGE>      PAGE  40
028 D010900       439
028 D020900         0
028 D030900         0
028 D040900         5
028 E010900       173
028 E020900         0
028 E030900         0
028 E040900        12
028 F010900       314
028 F020900         0
028 F030900         0
028 F040900        41
028 G010900      1394
028 G020900         0
028 G030900         0
028 G040900        84
028 H000900         0
045  000900 Y
046  000900 N
047  000900 Y
048  000900  0.600
048 A010900        0
048 A020900 0.000
048 B010900        0
048 B020900 0.000
048 C010900        0
048 C020900 0.000
048 D010900        0
048 D020900 0.000
048 E010900        0
048 E020900 0.000
048 F010900        0
048 F020900 0.000
048 G010900        0
048 G020900 0.000
048 H010900        0
048 H020900 0.000
048 I010900        0
048 I020900 0.000
048 J010900        0
048 J020900 0.000
048 K010900        0
048 K020900 0.000
049  000900 N
050  000900 N
051  000900 N
052  000900 N
053 A000900 Y
053 B000900 Y
053 C000900 Y
055 A000900 N
<PAGE>      PAGE  41
055 B000900 N
056  000900 Y
057  000900 N
058 A000900 N
059  000900 Y
060 A000900 Y
060 B000900 Y
061  000900        1
062 A000900 Y
062 B000900   0.0
062 C000900   4.5
062 D000900   0.0
062 E000900   0.0
062 F000900   0.0
062 G000900   0.0
062 H000900   0.0
062 I000900   0.0
062 J000900   0.0
062 K000900   0.0
062 L000900   0.0
062 M000900  36.4
062 N000900   3.6
062 O000900   0.0
062 P000900  51.4
062 Q000900   7.5
062 R000900   0.0
063 A000900   0
063 B000900  9.3
064 A000900 Y
064 B000900 N
066 A000900 N
067  000900 N
068 A000900 N
068 B000900 N
069  000900 N
070 A010900 Y
070 A020900 N
070 B010900 Y
070 B020900 N
070 C010900 Y
070 C020900 N
070 D010900 N
070 D020900 N
070 E010900 Y
070 E020900 N
070 F010900 N
070 F020900 N
070 G010900 Y
070 G020900 N
070 H010900 N
070 H020900 N
<PAGE>      PAGE  42
070 I010900 N
070 I020900 N
070 J010900 Y
070 J020900 Y
070 K010900 Y
070 K020900 N
070 L010900 Y
070 L020900 N
070 M010900 Y
070 M020900 N
070 N010900 Y
070 N020900 N
070 O010900 Y
070 O020900 N
070 P010900 Y
070 P020900 N
070 Q010900 N
070 Q020900 N
070 R010900 N
070 R020900 N
071 A000900      2460
071 B000900       988
071 C000900      1400
071 D000900   71
072 A000900  6
072 B000900       51
072 C000900        0
072 D000900        0
072 E000900        0
072 F000900        4
072 G000900        0
072 H000900        0
072 I000900        0
072 J000900        6
072 K000900        0
072 L000900        5
072 M000900        1
072 N000900        0
072 O000900        0
072 P000900        0
072 Q000900        0
072 R000900       11
072 S000900        0
072 T000900        0
072 U000900        1
072 V000900        0
072 W000900        0
072 X000900       28
072 Y000900       21
072 Z000900       44
072AA000900        0
<PAGE>      PAGE  43
072BB000900        7
072CC010900       18
072CC020900        0
072DD010900        0
072DD020900        0
072EE000900        0
073 A010900   0.0000
073 A020900   0.0000
073 B000900   0.0000
073 C000900   0.0000
074 A000900        1
074 B000900        0
074 C000900      100
074 D000900     2195
074 E000900        0
074 F000900        0
074 G000900        0
074 H000900        0
074 I000900        0
074 J000900       21
074 K000900        4
074 L000900       47
074 M000900        6
074 N000900     2374
074 O000900      150
074 P000900        0
074 Q000900        0
074 R010900        0
074 R020900        0
074 R030900        0
074 R040900        6
074 S000900        0
074 T000900     2218
074 U010900      214
074 U020900        0
074 V010900    10.35
074 V020900     0.00
074 W000900   0.0000
074 X000900       10
074 Y000900        0
075 A000900        0
075 B000900     1421
076  000900     0.00
024  001000 N
028 A011000         0
028 A021000         0
028 A031000         0
028 A041000         0
028 B011000         0
028 B021000         0
028 B031000         0
<PAGE>      PAGE  44
028 B041000         0
028 C011000         0
028 C021000         0
028 C031000         0
028 C041000         0
028 D011000         0
028 D021000         0
028 D031000         0
028 D041000         0
028 E011000         0
028 E021000         0
028 E031000         0
028 E041000         0
028 F011000         0
028 F021000         0
028 F031000         0
028 F041000         0
028 G011000         0
028 G021000         0
028 G031000         0
028 G041000         0
028 H001000         0
045  001000 Y
046  001000 N
047  001000 Y
048  001000  0.750
048 A011000        0
048 A021000 0.000
048 B011000        0
048 B021000 0.000
048 C011000        0
048 C021000 0.000
048 D011000        0
048 D021000 0.000
048 E011000        0
048 E021000 0.000
048 F011000        0
048 F021000 0.000
048 G011000        0
048 G021000 0.000
048 H011000        0
048 H021000 0.000
048 I011000        0
048 I021000 0.000
048 J011000        0
048 J021000 0.000
048 K011000        0
048 K021000 0.000
049  001000 N
050  001000 N
051  001000 N
<PAGE>      PAGE  45
052  001000 N
053 A001000 N
055 A001000 N
055 B001000 N
056  001000 Y
057  001000 N
058 A001000 N
059  001000 Y
060 A001000 N
060 B001000 N
061  001000        1
062 A001000 Y
062 B001000   0.0
062 C001000   0.0
062 D001000   0.0
062 E001000   0.0
062 F001000   0.0
062 G001000   0.0
062 H001000   0.0
062 I001000   0.0
062 J001000   0.0
062 K001000   0.0
062 L001000   0.0
062 M001000   0.0
062 N001000   0.0
062 O001000   0.0
062 P001000   0.0
062 Q001000   0.0
062 R001000   0.0
063 A001000   0
063 B001000  0.0
064 A001000 N
064 B001000 N
066 A001000 N
067  001000 N
068 A001000 N
068 B001000 N
069  001000 N
070 A011000 Y
070 A021000 N
070 B011000 Y
070 B021000 N
070 C011000 Y
070 C021000 N
070 D011000 N
070 D021000 N
070 E011000 Y
070 E021000 N
070 F011000 N
070 F021000 N
070 G011000 Y
<PAGE>      PAGE  46
070 G021000 N
070 H011000 N
070 H021000 N
070 I011000 N
070 I021000 N
070 J011000 Y
070 J021000 N
070 K011000 Y
070 K021000 N
070 L011000 Y
070 L021000 N
070 M011000 Y
070 M021000 N
070 N011000 Y
070 N021000 N
070 O011000 Y
070 O021000 N
070 P011000 Y
070 P021000 N
070 Q011000 N
070 Q021000 N
070 R011000 N
070 R021000 N
071 A001000         0
071 B001000         0
071 C001000         0
071 D001000    0
072 A001000  6
072 B001000        0
072 C001000        0
072 D001000        0
072 E001000        0
072 F001000        0
072 G001000        0
072 H001000        0
072 I001000        0
072 J001000        0
072 K001000        0
072 L001000        0
072 M001000        0
072 N001000        0
072 O001000        0
072 P001000        0
072 Q001000        0
072 R001000        0
072 S001000        0
072 T001000        0
072 U001000        0
072 V001000        0
072 W001000        0
072 X001000        0
<PAGE>      PAGE  47
072 Y001000        0
072 Z001000        0
072AA001000        0
072BB001000        0
072CC011000        0
072CC021000        0
072DD011000        0
072DD021000        0
072EE001000        0
073 A011000   0.0000
073 A021000   0.0000
073 B001000   0.0000
073 C001000   0.0000
074 A001000        9
074 B001000        0
074 C001000        0
074 D001000        0
074 E001000        0
074 F001000        0
074 G001000        0
074 H001000        0
074 I001000        0
074 J001000        0
074 K001000        0
074 L001000        0
074 M001000        0
074 N001000        9
074 O001000        0
074 P001000        0
074 Q001000        0
074 R011000        0
074 R021000        0
074 R031000        0
074 R041000        0
074 S001000        0
074 T001000        9
074 U011000        1
074 U021000        0
074 V011000    10.00
074 V021000     0.00
074 W001000   0.0000
074 X001000        4
074 Y001000        0
075 A001000        0
075 B001000        9
076  001000     0.00
024  001100 N
028 A011100      1689
028 A021100         0
028 A031100         0
028 A041100       204
<PAGE>      PAGE  48
028 B011100      2248
028 B021100         0
028 B031100         0
028 B041100       879
028 C011100      1433
028 C021100         0
028 C031100         0
028 C041100      1031
028 D011100      6367
028 D021100         0
028 D031100         0
028 D041100      1126
028 E011100      1751
028 E021100         0
028 E031100         0
028 E041100      2519
028 F011100      1799
028 F021100         0
028 F031100         0
028 F041100       787
028 G011100     15287
028 G021100         0
028 G031100         0
028 G041100      6546
028 H001100         0
045  001100 Y
046  001100 N
047  001100 Y
048  001100  0.750
048 A011100        0
048 A021100 0.000
048 B011100        0
048 B021100 0.000
048 C011100        0
048 C021100 0.000
048 D011100        0
048 D021100 0.000
048 E011100        0
048 E021100 0.000
048 F011100        0
048 F021100 0.000
048 G011100        0
048 G021100 0.000
048 H011100        0
048 H021100 0.000
048 I011100        0
048 I021100 0.000
048 J011100        0
048 J021100 0.000
048 K011100        0
048 K021100 0.000
<PAGE>      PAGE  49
049  001100 N
050  001100 N
051  001100 N
052  001100 N
053 A001100 Y
053 B001100 Y
053 C001100 Y
055 A001100 N
055 B001100 N
056  001100 Y
057  001100 N
058 A001100 N
059  001100 Y
060 A001100 Y
060 B001100 Y
061  001100        1
062 A001100 Y
062 B001100   0.0
062 C001100   2.4
062 D001100   0.0
062 E001100   0.0
062 F001100   0.0
062 G001100   0.0
062 H001100   0.0
062 I001100   0.0
062 J001100   0.0
062 K001100   0.0
062 L001100   0.0
062 M001100   0.0
062 N001100   0.0
062 O001100   0.0
062 P001100  88.1
062 Q001100   6.3
062 R001100   3.2
063 A001100   0
063 B001100  8.3
064 A001100 N
064 B001100 Y
065  001100 N
066 A001100 N
067  001100 N
068 A001100 N
068 B001100 N
069  001100 N
070 A011100 Y
070 A021100 N
070 B011100 Y
070 B021100 N
070 C011100 Y
070 C021100 N
070 D011100 N
<PAGE>      PAGE  50
070 D021100 N
070 E011100 Y
070 E021100 N
070 F011100 N
070 F021100 N
070 G011100 Y
070 G021100 N
070 H011100 N
070 H021100 N
070 I011100 N
070 I021100 N
070 J011100 Y
070 J021100 Y
070 K011100 Y
070 K021100 N
070 L011100 Y
070 L021100 Y
070 M011100 Y
070 M021100 N
070 N011100 Y
070 N021100 N
070 O011100 Y
070 O021100 N
070 P011100 Y
070 P021100 N
070 Q011100 N
070 Q021100 N
070 R011100 N
070 R021100 N
071 A001100     19478
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072 M001100        1
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072 P001100        0
072 Q001100        0
072 R001100        9
<PAGE>      PAGE  51
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072 T001100        0
072 U001100        1
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072 X001100      106
072 Y001100       18
072 Z001100      805
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072DD021100        0
072EE001100        0
073 A011100   0.0000
073 A021100   0.0000
073 B001100   0.0000
073 C001100   0.0000
074 A001100        9
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074 D001100    21684
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074 J001100       43
074 K001100        5
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074 M001100        6
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074 O001100      548
074 P001100        2
074 Q001100        0
074 R011100        0
074 R021100        0
074 R031100        0
074 R041100       48
074 S001100        0
074 T001100    22967
074 U011100     1979
074 U021100        0
074 V011100    11.61
074 V021100     0.00
074 W001100   0.0000
074 X001100       11
074 Y001100        0
075 A001100        0
075 B001100    17878
<PAGE>      PAGE  52
076  001100     0.00
024  001200 Y
025 A001201 CHASE MANHATTAN
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025 D001201    2905
025 A001202 MORGAN
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025 C001202 E
025 D001202     611
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025 D001203    1019
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025 D001205       0
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028 A011200     14714
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028 B041200       770
028 C011200     21352
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045  001200 Y
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<PAGE>      PAGE  53
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<PAGE>      PAGE  54
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066 E001200 N
066 F001200 N
066 G001200 N
067  001200 N
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068 B001200 N
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070 B021200 N
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070 C021200 N
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070 D021200 N
070 E011200 N
070 E021200 N
070 F011200 N
070 F021200 N
070 G011200 N
070 G021200 N
070 H011200 N
070 H021200 N
070 I011200 N
070 I021200 N
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070 J021200 Y
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070 L021200 Y
070 M011200 Y
070 M021200 Y
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070 O021200 N
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<PAGE>      PAGE  55
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<PAGE>      PAGE  56
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074 K001200       30
074 L001200     2668
074 M001200        6
074 N001200   205212
074 O001200    10714
074 P001200       12
074 Q001200        0
074 R011200        0
074 R021200        0
074 R031200        0
074 R041200       82
074 S001200        0
074 T001200   194404
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074 X001200       32
074 Y001200        0
075 A001200        0
075 B001200   104271
076  001200     0.00
SIGNATURE   JAMES O. YOST                                
TITLE       ASSISTANT TREASURER 
 


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 01
   <NAME> MFS WORLD GOVERNMENTS SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                         32248078
<INVESTMENTS-AT-VALUE>                        32149281
<RECEIVABLES>                                  2346206 
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                              7663
<TOTAL-ASSETS>                                34503150
<PAYABLE-FOR-SECURITIES>                         86785
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       603842
<TOTAL-LIABILITIES>                             690627
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                      34038850
<SHARES-COMMON-STOCK>                          3331370
<SHARES-COMMON-PRIOR>                          2459773
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<OVERDISTRIBUTION-GAINS>                     (1185399)
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<DIVIDEND-INCOME>                                    0
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<NET-INVESTMENT-INCOME>                         846320
<REALIZED-GAINS-CURRENT>                     (1185315)
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<NET-CHANGE-FROM-OPS>                         (385359)
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                     (490069)
<DISTRIBUTIONS-OF-GAINS>                      (222083)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        1897860
<NUMBER-OF-SHARES-REDEEMED>                  (1097336)
<SHARES-REINVESTED>                              71073
<NET-CHANGE-IN-ASSETS>                         7789570
<ACCUMULATED-NII-PRIOR>                         876272
<ACCUMULATED-GAINS-PRIOR>                       221999
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<PER-SHARE-NAV-BEGIN>                            10.58
<PER-SHARE-NII>                                   0.29
<PER-SHARE-GAIN-APPREC>                         (0.47)
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<PER-SHARE-NAV-END>                              10.15
<EXPENSE-RATIO>                                   1.00
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<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 02
   <NAME> MFS TOTAL RETURN SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                         39804099
<INVESTMENTS-AT-VALUE>                        43554105
<RECEIVABLES>                                   823901 
<ASSETS-OTHER>                                    1597
<OTHER-ITEMS-ASSETS>                             21698
<TOTAL-ASSETS>                                44401301
<PAYABLE-FOR-SECURITIES>                       1210873
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       163862
<TOTAL-LIABILITIES>                            1374735
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                      38541104
<SHARES-COMMON-STOCK>                          2817952
<SHARES-COMMON-PRIOR>                          1404528
<ACCUMULATED-NII-CURRENT>                       496494
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         238979
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       3749989
<NET-ASSETS>                                  43026566
<DIVIDEND-INCOME>                               205735
<INTEREST-INCOME>                               437811
<OTHER-INCOME>                                  (1853)
<EXPENSES-NET>                                (145425)
<NET-INVESTMENT-INCOME>                         496268
<REALIZED-GAINS-CURRENT>                        233911
<APPREC-INCREASE-CURRENT>                      2676039
<NET-CHANGE-FROM-OPS>                          3406218
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
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<NUMBER-OF-SHARES-SOLD>                        1525901
<NUMBER-OF-SHARES-REDEEMED>                   (112477)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                        23776794
<ACCUMULATED-NII-PRIOR>                            226     
<ACCUMULATED-GAINS-PRIOR>                         5068
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                           109190
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 116755
<AVERAGE-NET-ASSETS>                          29520416
<PER-SHARE-NAV-BEGIN>                            13.71
<PER-SHARE-NII>                                   0.24
<PER-SHARE-GAIN-APPREC>                           1.32
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<PER-SHARE-NAV-END>                              15.27
<EXPENSE-RATIO>                                   1.00
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<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 03
   <NAME> MFS UTILITIES SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                         15600053
<INVESTMENTS-AT-VALUE>                        17009436
<RECEIVABLES>                                   542676 
<ASSETS-OTHER>                                     213
<OTHER-ITEMS-ASSETS>                             14059
<TOTAL-ASSETS>                                17566384
<PAYABLE-FOR-SECURITIES>                        233921
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       419516
<TOTAL-LIABILITIES>                             653437
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                      14747790
<SHARES-COMMON-STOCK>                          1108841
<SHARES-COMMON-PRIOR>                           700567
<ACCUMULATED-NII-CURRENT>                       206909
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         548910
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       1409338
<NET-ASSETS>                                  16912947
<DIVIDEND-INCOME>                               190967 
<INTEREST-INCOME>                                82110
<OTHER-INCOME>                                  (3186)
<EXPENSES-NET>                                 (62982)
<NET-INVESTMENT-INCOME>                         206909
<REALIZED-GAINS-CURRENT>                        550726
<APPREC-INCREASE-CURRENT>                       798096
<NET-CHANGE-FROM-OPS>                          1555731
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
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<NUMBER-OF-SHARES-SOLD>                         636790
<NUMBER-OF-SHARES-REDEEMED>                    (228516)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                         7340806
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                         (1816)
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                            47242
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  69093
<AVERAGE-NET-ASSETS>                          12770317
<PER-SHARE-NAV-BEGIN>                            13.66
<PER-SHARE-NII>                                   0.23
<PER-SHARE-GAIN-APPREC>                           1.36
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<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 04
   <NAME> MFS MONEY MARKET SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                          6565790
<INVESTMENTS-AT-VALUE>                         6565790
<RECEIVABLES>                                   235473 
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                             45417
<TOTAL-ASSETS>                                 6846680
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         8976
<TOTAL-LIABILITIES>                               8976
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       6837704
<SHARES-COMMON-STOCK>                          6837704
<SHARES-COMMON-PRIOR>                           632618
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                             0
<NET-ASSETS>                                   6837704
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                80075
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                  (8789)
<NET-INVESTMENT-INCOME>                          71286
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                            0
<NET-CHANGE-FROM-OPS>                            71286
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      (71286)
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        8538530
<NUMBER-OF-SHARES-REDEEMED>                  (2404730)
<SHARES-REINVESTED>                              71286
<NET-CHANGE-IN-ASSETS>                         6205086
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                             7324
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  21559
<AVERAGE-NET-ASSETS>                           2969036
<PER-SHARE-NAV-BEGIN>                             1.00
<PER-SHARE-NII>                                   0.02
<PER-SHARE-GAIN-APPREC>                           0.00
<PER-SHARE-DIVIDEND>                            (0.02)
<PER-SHARE-DISTRIBUTIONS>                         0.00
<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                               1.00
<EXPENSE-RATIO>                                   0.60
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 05
   <NAME> MFS GROWTH WITH INCOME SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                         20162960
<INVESTMENTS-AT-VALUE>                        22714147
<RECEIVABLES>                                   223339 
<ASSETS-OTHER>                                     306
<OTHER-ITEMS-ASSETS>                              6012
<TOTAL-ASSETS>                                22943804
<PAYABLE-FOR-SECURITIES>                        998084
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                        61377
<TOTAL-LIABILITIES>                            1059461
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                      18859531
<SHARES-COMMON-STOCK>                          1429826
<SHARES-COMMON-PRIOR>                           706552
<ACCUMULATED-NII-CURRENT>                        63682
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                         409923
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                       2551207
<NET-ASSETS>                                  21884343
<DIVIDEND-INCOME>                               100295
<INTEREST-INCOME>                                22898
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                 (61010)
<NET-INVESTMENT-INCOME>                          62183
<REALIZED-GAINS-CURRENT>                        420344 
<APPREC-INCREASE-CURRENT>                      1716393
<NET-CHANGE-FROM-OPS>                          2198920
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                         889278
<NUMBER-OF-SHARES-REDEEMED>                   (166004)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                        12710230
<ACCUMULATED-NII-PRIOR>                           1499
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                     (10421)
<GROSS-ADVISORY-FEES>                            45757
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  73874
<AVERAGE-NET-ASSETS>                          12370506       
<PER-SHARE-NAV-BEGIN>                            12.98
<PER-SHARE-NII>                                   0.04
<PER-SHARE-GAIN-APPREC>                           2.29
<PER-SHARE-DIVIDEND>                              0.00
<PER-SHARE-DISTRIBUTIONS>                         0.00
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<PER-SHARE-NAV-END>                              15.31
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 06
   <NAME> MFS VALUE SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                          3578479
<INVESTMENTS-AT-VALUE>                         3857832
<RECEIVABLES>                                   114942 
<ASSETS-OTHER>                                     464
<OTHER-ITEMS-ASSETS>                              8246
<TOTAL-ASSETS>                                 3981484
<PAYABLE-FOR-SECURITIES>                        270383
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         8538
<TOTAL-LIABILITIES>                             278921
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                       3361157
<SHARES-COMMON-STOCK>                           312071
<SHARES-COMMON-PRIOR>                           126723
<ACCUMULATED-NII-CURRENT>                        12602
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                          49936
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                        278868
<NET-ASSETS>                                   3702563
<DIVIDEND-INCOME>                                 9385
<INTEREST-INCOME>                                13833
<OTHER-INCOME>                                   (442)
<EXPENSES-NET>                                 (10174)
<NET-INVESTMENT-INCOME>                          12602
<REALIZED-GAINS-CURRENT>                         50964
<APPREC-INCREASE-CURRENT>                       205733
<NET-CHANGE-FROM-OPS>                           269299
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
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<NUMBER-OF-SHARES-SOLD>                         201454
<NUMBER-OF-SHARES-REDEEMED>                    (16106)  
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                         2351308
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                         (1028)
<OVERDIST-NET-GAINS-PRIOR>                           0
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<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  35241
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<PER-SHARE-NAV-BEGIN>                            10.66
<PER-SHARE-NII>                                   0.07
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<PER-SHARE-NAV-END>                              11.86
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 07
   <NAME> MFS EMERGING GROWTH SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                        222107129
<INVESTMENTS-AT-VALUE>                       248943180
<RECEIVABLES>                                  3313517 
<ASSETS-OTHER>                                    6000
<OTHER-ITEMS-ASSETS>                             24484
<TOTAL-ASSETS>                               252287181
<PAYABLE-FOR-SECURITIES>                       3614495
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                       508992
<TOTAL-LIABILITIES>                            4123487
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                     225110965
<SHARES-COMMON-STOCK>                         16917592
<SHARES-COMMON-PRIOR>                          7928680
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                        (249920)
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                     (3302908)
<ACCUM-APPREC-OR-DEPREC>                      26605557
<NET-ASSETS>                                 248163694
<DIVIDEND-INCOME>                               168806
<INTEREST-INCOME>                               383032
<OTHER-INCOME>                                  (2892)
<EXPENSES-NET>                                (798866)  
<NET-INVESTMENT-INCOME>                       (249920)
<REALIZED-GAINS-CURRENT>                     (2881930)
<APPREC-INCREASE-CURRENT>                     24621707
<NET-CHANGE-FROM-OPS>                         21489857
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
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<NUMBER-OF-SHARES-SOLD>                       15267618
<NUMBER-OF-SHARES-REDEEMED>                  (6278706)
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                       143207390
<ACCUMULATED-NII-PRIOR>                              0
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<OVERDISTRIB-NII-PRIOR>                       (420978)
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<GROSS-ADVISORY-FEES>                           630293
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                 721477
<AVERAGE-NET-ASSETS>                         170404187
<PER-SHARE-NAV-BEGIN>                            13.24
<PER-SHARE-NII>                                 (0.02)
<PER-SHARE-GAIN-APPREC>                           1.45
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<PER-SHARE-NAV-END>                              14.67
<EXPENSE-RATIO>                                   0.95
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 08
   <NAME> MFS LIMITED MATURITY SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<INVESTMENTS-AT-COST>                           566616
<INVESTMENTS-AT-VALUE>                          567367
<RECEIVABLES>                                    16742 
<ASSETS-OTHER>                                       4
<OTHER-ITEMS-ASSETS>                              9944
<TOTAL-ASSETS>                                  594057
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                         7636
<TOTAL-LIABILITIES>                               7636
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                        571667
<SHARES-COMMON-STOCK>                            57111
<SHARES-COMMON-PRIOR>                            52239
<ACCUMULATED-NII-CURRENT>                        16557
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<OVERDISTRIBUTION-GAINS>                        (2554)
<ACCUM-APPREC-OR-DEPREC>                           751
<NET-ASSETS>                                    586421
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                19191
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                  (2683)
<NET-INVESTMENT-INCOME>                          16508
<REALIZED-GAINS-CURRENT>                        (1123)
<APPREC-INCREASE-CURRENT>                       (1126)
<NET-CHANGE-FROM-OPS>                            14259
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
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<NUMBER-OF-SHARES-SOLD>                           4934
<NUMBER-OF-SHARES-REDEEMED>                       (62)  
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                           63489
<ACCUMULATED-NII-PRIOR>                             49
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                      (1431)
<GROSS-ADVISORY-FEES>                             1475
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                  19177
<AVERAGE-NET-ASSETS>                            543957
<PER-SHARE-NAV-BEGIN>                            10.01
<PER-SHARE-NII>                                   0.31
<PER-SHARE-GAIN-APPREC>                         (0.05)
<PER-SHARE-DIVIDEND>                              0.00
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<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                              10.27
<EXPENSE-RATIO>                                   1.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 09
   <NAME> MFS BOND SERIES
<MULTIPLIER> 1
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
<SERIES>
   <NUMBER> 10
   <NAME> MFS STRATEGIC FIXED INCOME SERIES
<MULTIPLIER> 1
       
<S>                             <C>
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
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   <NUMBER> 11
   <NAME> MFS HIGH INCOME SERIES
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<S>                             <C>
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</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000918571
<NAME> MFS VARIABLE INSURANCE TRUST
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   <NAME> MFS RESEARCH SERIES
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</TABLE>


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