<PAGE> PAGE 1
000 A000000 06/30/97
000 C000000 948336
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 STRONG INSTITUTIONAL FUNDS, INC.
001 B000000 811-7335
001 C000000 4145777365
002 A000000 P.O. BOX 2936
002 B000000 MILWAUKEE
002 C000000 WI
002 D010000 53201
002 D020000 2936
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 2
007 C010100 1
007 C010200 2
007 C020200 STRONG INSTITUTIONAL BOND FUND
007 C030200 N
007 C010300 3
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007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
012 A00AA01 STRONG CAPITAL MANAGEMENT, INC.
012 B00AA01 84-1599
012 C01AA01 MILWAUKEE
012 C02AA01 WI
012 C03AA01 53201
012 C04AA01 2936
013 A00AA01 COOPERS & LYBRAND, L.L.P.
013 B01AA01 MILWAUKEE
013 B02AA01 WI
013 B03AA01 53202
014 A00AA01 STRONG FUNDS DISTRIBUTORS, INC.
014 B00AA01 8-32608
014 A00AA02 W.H. REAVES & CO., INC.
014 B00AA02 8-22142
020 C000001 0
020 C000002 0
<PAGE> PAGE 2
020 C000003 0
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020 C000005 0
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020 C000007 0
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020 C000009 0
020 C000010 0
021 000000 0
022 A000001 CANTOR FITZGERALD & COMPANY
022 C000001 132800
022 D000001 0
022 A000002 GOLDMAN, SACHS & COMPANY
022 C000002 134381
022 D000002 2313
022 A000003 LEHMAN BROTHERS, INC.
022 C000003 6782
022 D000003 5510
022 A000004 SALOMON BROTHERS, INC.
022 C000004 4985
022 D000004 3246
022 A000005 ELAN INVESTMENT SERVICES, INC.
022 C000005 5540
022 D000005 2335
022 A000006 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
022 C000006 2782
022 D000006 2396
022 A000007 MORGAN STANLEY, DEAN WITTER, DISCOVER & CO.
022 C000007 1933
022 D000007 295
022 A000008 BANKERS TRUST COMPANY
022 C000008 1150
022 D000008 963
022 A000009 PAINEWEBBER, INC.
022 C000009 2000
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022 A000010 DONALDSON, LUFKIN & JENRETTE SECURITIES
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<PAGE> PAGE 3
077 A000000 N
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008 A000201 STRONG CAPITAL MANAGEMENT, INC.
008 B000201 A
008 C000201 801-10724
008 D010201 MILWAUKEE
008 D020201 WI
008 D030201 53201
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011 A000201 STRONG FUNDS DISTRIBUTORS, INC.
011 B000201 8-10724
011 C010201 MILWAUKEE
011 C020201 WI
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011 C040201 2936
015 A000201 FIRSTAR TRUST COMPANY
015 B000201 C
015 C010201 MILWAUKEE
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015 C030201 53202
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015 A000202 BROWN BROTHERS HARRIMAN & CO.
015 B000202 S
015 C010202 BOSTON
015 C020202 MA
015 C030202 02109
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<PAGE> PAGE 4
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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
084 B000200 0
SIGNATURE JOHN FLANAGAN
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000948336
<NAME> "Strong Institutional Funds, Inc."
<SERIES>
<NUMBER> 2
<NAME> Strong Institutional Bond Fund
<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> 23,712,175
<INVESTMENTS-AT-VALUE> 23,783,570
<RECEIVABLES> 208,959
<ASSETS-OTHER> 47,030
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 24,039,649
<PAYABLE-FOR-SECURITIES> 1,695,596
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 126,082
<TOTAL-LIABILITIES> 1,821,678
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 21,971,772
<SHARES-COMMON-STOCK> 2,073,694
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 174,804
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 71,395
<NET-ASSETS> 22,217,971
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 333,486
<OTHER-INCOME> 0
<EXPENSES-NET> (19,438)
<NET-INVESTMENT-INCOME> 314,048
<REALIZED-GAINS-CURRENT> 174,804
<APPREC-INCREASE-CURRENT> 71,395
<NET-CHANGE-FROM-OPS> 560,247
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 314,048
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,221,340
<NUMBER-OF-SHARES-REDEEMED> (169,097)
<SHARES-REINVESTED> 21,451
<NET-CHANGE-IN-ASSETS> 22,217,971
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 12,167
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 43,583
<AVERAGE-NET-ASSETS> 10,034,115
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.31
<PER-SHARE-GAIN-APPREC> 0.71
<PER-SHARE-DIVIDEND> (0.31)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 10.71
<EXPENSE-RATIO> 0.4<F1>
<FN>
<F1>Expense ratio without waivers and absorptions would have been 0.9%.
</FN>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
