<PAGE> PAGE 1
000 B000000 09/30/97
000 C000000 888129
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 THE GABELLI MONEY MARKET FUNDS
001 B000000 811-6687
001 C000000 9149215100
002 A000000 ONE CORPORATE CENTER
002 B000000 RYE
002 C000000 NY
002 D010000 10580
002 D020000 1434
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 1
007 C010100 1
007 C020100 THE GABELLI US TREASURY MONEY MARKET FUND
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007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A00AA01 GABELLI FUNDS, INC.
008 B00AA01 A
008 C00AA01 801-37706
008 D01AA01 RYE
008 D02AA01 NY
008 D03AA01 10580
008 D04AA01 1434
008 A00AA02 DELETE
010 A00AA01 FIRST DATA INVESTOR SERVICES GROUP, INC.
010 B00AA01 84-1761
010 C01AA01 BOSTON
010 C02AA01 MA
010 C03AA01 02109
011 A00AA01 GABELLI & COMPANY, INC.
011 B00AA01 8-21373
011 C01AA01 RYE
<PAGE> PAGE 2
011 C02AA01 NY
011 C03AA01 10580
011 C04AA01 1434
012 A00AA01 STATE STREET BANK & TRUST COMPANY
012 B00AA01 85-5003
012 C01AA01 QUINCY
012 C02AA01 MA
012 C03AA01 02171
013 A00AA01 ERNST & YOUNG, LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
013 B03AA01 10019
014 A00AA01 IFG NETWORK SECURITIES INC.
014 B00AA01 8-37937
014 A00AA02 KEELEY INVESTMENT CORPORATION
014 B00AA02 8-20353
014 A00AA03 GABELLI & COMPANY, INC.
014 B00AA03 8-21373
015 A00AA01 STATE STREET BANK AND TRUST COMPANY
015 B00AA01 C
015 C01AA01 QUINCY
015 C02AA01 MA
015 C03AA01 02171
015 E01AA01 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 16
019 C00AA00 GABELLIGRP
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020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 G. X. CLARKE & CO., INC.
022 B000001 13-2969143
022 C000001 2344693
022 D000001 2000138
022 A000002 DRESDNER INC.
022 B000002 04-2442748
022 C000002 178916
022 D000002 125881
022 A000003 STATE STREET BANK & TRUST CO.
022 B000003 04-1867445
022 C000003 96917
022 D000003 45804
<PAGE> PAGE 3
022 A000004 PAINE WEBBER
022 B000004 13-2638166
022 C000004 99369
022 D000004 141522
022 A000005 ZIONS INC.
022 B000005 87-0189025
022 C000005 16459
022 D000005 4480
022 A000006 BZW SECURITIES INC.
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022 C000006 12806
022 D000006 1673
022 A000007 NOMURA SECURITIES
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022 C000007 0
022 D000007 990
022 A000008 BARCLAYS DE ZOETE WEDD SEC. LTD.
022 B000008 05-0346412
022 C000008 8205
022 D000008 8142
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022 D000009 23772
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022 D000010 53138
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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
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SIGNATURE BRUCE N. ALPERT
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 01
<NAME> GABELLI U.S. TREASURY MON
<S> <C>
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<PERIOD-END> SEP-30-1997
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<INVESTMENTS-AT-VALUE> 196,390,206
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<OTHER-ITEMS-LIABILITIES> 1,103,029
<TOTAL-LIABILITIES> 1,103,029
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 203,536,832
<SHARES-COMMON-STOCK> 203,536,832
<SHARES-COMMON-PRIOR> 216,037,513
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 5,230
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 203,542,062
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 10,907,438
<OTHER-INCOME> 0
<EXPENSES-NET> 635,419
<NET-INVESTMENT-INCOME> 10,272,019
<REALIZED-GAINS-CURRENT> 246,921
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 10,518,940
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (10,272,019)
<DISTRIBUTIONS-OF-GAINS> (241,691)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,152,102,612
<NUMBER-OF-SHARES-REDEEMED> (2,174,552,390)
<SHARES-REINVESTED> 9,949,097
<NET-CHANGE-IN-ASSETS> (12,495,451)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
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<GROSS-EXPENSE> 978,656
<AVERAGE-NET-ASSETS> 211,754,044
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</TABLE>
