<PAGE> PAGE 1
000 B000000 01/31/97
000 C000000 0000796251
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 U
001 A000000 DREYFUS TREASURY CASH MANAGEMENT
001 B000000 811-4723
001 C000000 2129226754
002 A000000 144 GLENN CURTISS BOULEVARD
002 B000000 UNIONDALE
002 C000000 NY
002 D010000 11556
002 D020000 0144
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
011 A000001 PREMIER MUTUAL FUND SERVICES, INC
011 B000001 8-13801
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10166
012 A000001 DREYFUS TRANSFER, INC.
012 B000001 85-11312
012 C010001 PROVIDENCE
012 C020001 RI
012 C030001 02940
012 C040001 9671
015 A000001 THE BANK OF NEW YORK
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10286
015 E010001 X
015 A000002 WELLS FARGO BANK, N.A.
015 B000002 S
015 C010002 LOS ANGELES
015 C020002 CA
015 C030002 90017
015 E010002 X
018 000000 Y
019 A000000 Y
019 B000000 152
019 C000000 DREYFUSFAM
020 C000001 0
<PAGE> PAGE 2
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 UBS SECURITIES INC.
022 B000001 13-2932996
022 C000001 88646440
022 D000001 733944
022 A000002 MORGAN STANLEY & CO. INCORPORATED
022 B000002 13-2655998
022 C000002 88203904
022 D000002 0
022 A000003 GOLDMAN, SACHS & CO.
022 B000003 13-5108880
022 C000003 78503291
022 D000003 27680
022 A000004 SBC CAPITAL MARKETS, INC.
022 B000004 13-3498485
022 C000004 70210058
022 D000004 0
022 A000005 NOMURA SECURITIES INTERNATIONAL, INC.
022 B000005 13-2642206
022 C000005 48715950
022 D000005 0
022 A000006 BARCLAYS DE ZOETE WEDD SECURITIES, INC.
022 B000006 13-3551367
022 C000006 40671930
022 D000006 551480
022 A000007 AUBREY G. LANSTON & CO. INC.
022 B000007 13-5552129
022 C000007 30041589
022 D000007 288399
022 A000008 WDDD GUNDY CORP.
022 B000008 13-5492430
022 C000008 29898855
022 D000008 0
022 A000009 SANWA SECURITIES (USA) CO., L.P.
022 B000009 13-3046258
022 C000009 20049295
022 D000009 0
022 A000010 LEHMAN BROTHERS INC.
022 B000010 13-2518466
022 C000010 6047505
022 D000010 0
023 C000000 507594106
<PAGE> PAGE 3
023 D000000 3916765
024 000000 Y
025 A000001 BARCLAYS DE ZOETE WEDD SECURITIES, INC.
025 B000001 13-3551367
025 C000001 D
025 D000001 190000
025 A000002 WOOD GUNDY CORP.
025 B000002 13-5492430
025 C000002 D
025 D000002 200000
025 A000003 GOLDMAN, SACHS & CO.
025 B000003 13-5108880
025 C000003 D
025 D000003 32834
025 A000004 MORGAN STANLEY & CO. INCORPORATED
025 B000004 13-2655998
025 C000004 D
025 D000004 130000
025 A000005 SBC CAPITAL MARKETS, INC.
025 B000005 13-3498485
025 C000005 D
025 D000005 300000
025 A000006 UBS SECURITIES INC.
025 B000006 13-2932996
025 C000006 D
025 D000006 350000
025 D000007 0
025 D000008 0
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 Y
028 A010000 3193308
028 A020000 3746
028 A030000 0
028 A040000 3191671
028 B010000 3831653
028 B020000 3536
028 B030000 0
028 B040000 3527509
028 C010000 3064730
028 C020000 3691
028 C030000 0
028 C040000 3217662
028 D010000 2375945
028 D020000 3971
<PAGE> PAGE 4
028 D030000 0
028 D040000 2240520
028 E010000 3433803
028 E020000 3956
028 E030000 0
028 E040000 3261010
028 F010000 3030582
028 F020000 4327
028 F030000 0
028 F040000 3193273
028 G010000 18930021
028 G020000 23227
028 G030000 0
028 G040000 18631645
028 H000000 0
042 A000000 100
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 397
044 000000 0
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 Y
054 A000000 Y
054 B000000 Y
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 N
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 Y
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 Y
055 B000000 N
056 000000 N
057 000000 N
062 A000000 Y
062 B000000 58.8
<PAGE> PAGE 5
062 C000000 0.0
062 D000000 40.4
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 55
063 B000000 0.0
064 A000000 Y
064 B000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 N
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 N
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 N
070 K010000 N
070 K020000 N
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
<PAGE> PAGE 6
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 Y
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 0
071 B000000 0
071 C000000 0
071 D000000 0
072 A000000 6
072 B000000 79681
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 2985
072 G000000 0
072 H000000 0
072 I000000 0
072 J000000 0
072 K000000 0
072 L000000 0
072 M000000 0
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 0
072 S000000 0
072 T000000 397
072 U000000 0
072 V000000 0
072 W000000 0
072 X000000 3382
072 Y000000 0
072 Z000000 76299
072AA000000 75
072BB000000 81
072CC010000 0
072CC020000 0
072DD010000 68531
072DD020000 7768
072EE000000 0
073 A010000 0.0000
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
<PAGE> PAGE 7
074 A000000 382
074 B000000 1202834
074 C000000 1752741
074 D000000 0
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 23588
074 M000000 0
074 N000000 2979545
074 O000000 0
074 P000000 519
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 32
074 S000000 0
074 T000000 2978994
074 U010000 2648906
074 U020000 330431
074 V010000 0.00
074 V020000 0.00
074 W000000 1.0000
074 X000000 478
074 Y000000 0
075 A000000 2645135
075 B000000 0
076 000000 0.00
077 A000000 Y
077 B000000 Y
077 I000000 Y
080 A000000 VIGILANT INSURANCE COMPANY
080 B000000 NATIONAL UNION FIRE INS. CO. OF PITTSBURGH,PA
080 C000000 125000
081 A000000 Y
081 B000000 166
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
SIGNATURE MICHAEL S. PETRUCELLI
TITLE ASSISTANT TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000796251
<NAME> DREYFUS TREASURY CASH MANAGEMENT
<SERIES>
<NUMBER> 1
<NAME> INSTITUTIONAL
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JAN-31-1997
<PERIOD-END> JAN-31-1997
<INVESTMENTS-AT-COST> 2955575
<INVESTMENTS-AT-VALUE> 2955575
<RECEIVABLES> 23588
<ASSETS-OTHER> 382
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2979545
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 551
<TOTAL-LIABILITIES> 551
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2979337
<SHARES-COMMON-STOCK> 2648906
<SHARES-COMMON-PRIOR> 2420151
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (343)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 2648579
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 79681
<OTHER-INCOME> 0
<EXPENSES-NET> 3382
<NET-INVESTMENT-INCOME> 76299
<REALIZED-GAINS-CURRENT> (6)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 76293
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 68531
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 16841898
<NUMBER-OF-SHARES-REDEEMED> (16634768)
<SHARES-REINVESTED> 21625
<NET-CHANGE-IN-ASSETS> 321598
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (336)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2985
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3382
<AVERAGE-NET-ASSETS> 2645135
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> (.026)
<PER-SHARE-GAIN-APPREC> .000
<PER-SHARE-DIVIDEND> (.026)
<PER-SHARE-DISTRIBUTIONS> .000
<RETURNS-OF-CAPITAL> .000
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .002
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000796251
<NAME> DREYFUS TREASURY CASH MANAGEMENT
<SERIES>
<NUMBER> 2
<NAME> ADMINISTRATIVE
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JAN-31-1997
<PERIOD-END> JAN-31-1997
<INVESTMENTS-AT-COST> 2955575
<INVESTMENTS-AT-VALUE> 2955575
<RECEIVABLES> 23588
<ASSETS-OTHER> 382
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2979545
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 551
<TOTAL-LIABILITIES> 551
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2979337
<SHARES-COMMON-STOCK> 0
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (343)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 0
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 79681
<OTHER-INCOME> 0
<EXPENSES-NET> 3382
<NET-INVESTMENT-INCOME> 76299
<REALIZED-GAINS-CURRENT> (6)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 76293
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 321598
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (336)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2985
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 03382
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .010
<PER-SHARE-GAIN-APPREC> .000
<PER-SHARE-DIVIDEND> (.010)
<PER-SHARE-DISTRIBUTIONS> .000
<RETURNS-OF-CAPITAL> .000
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .003
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000796251
<NAME> DREYFUS TREASURY CASH MANAGEMENT
<SERIES>
<NUMBER> 3
<NAME> INVESTOR
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JAN-31-1997
<PERIOD-END> JAN-31-1997
<INVESTMENTS-AT-COST> 2955575
<INVESTMENTS-AT-VALUE> 2955575
<RECEIVABLES> 23588
<ASSETS-OTHER> 382
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2979545
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 551
<TOTAL-LIABILITIES> 551
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2979337
<SHARES-COMMON-STOCK> 330431
<SHARES-COMMON-PRIOR> 237582
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (343)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 330415
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 79681
<OTHER-INCOME> 0
<EXPENSES-NET> 3382
<NET-INVESTMENT-INCOME> 76299
<REALIZED-GAINS-CURRENT> (6)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 76293
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 7768
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2088123
<NUMBER-OF-SHARES-REDEEMED> (1996877)
<SHARES-REINVESTED> 1602
<NET-CHANGE-IN-ASSETS> 321598
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (336)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2985
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3382
<AVERAGE-NET-ASSETS> 315318
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .025
<PER-SHARE-GAIN-APPREC> .000
<PER-SHARE-DIVIDEND> (.025)
<PER-SHARE-DISTRIBUTIONS> .000
<RETURNS-OF-CAPITAL> .000
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .005
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000796251
<NAME> DREYFUS TREASURY CASH MANAGEMENT
<SERIES>
<NUMBER> 4
<NAME> PARTICIPANT
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> JAN-31-1997
<PERIOD-END> JAN-31-1997
<INVESTMENTS-AT-COST> 2955575
<INVESTMENTS-AT-VALUE> 2955575
<RECEIVABLES> 23588
<ASSETS-OTHER> 382
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2979545
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 551
<TOTAL-LIABILITIES> 551
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2979337
<SHARES-COMMON-STOCK> 0
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (343)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 0
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 79681
<OTHER-INCOME> 0
<EXPENSES-NET> 3382
<NET-INVESTMENT-INCOME> 76299
<REALIZED-GAINS-CURRENT> (6)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 76293
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 321598
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (336)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2985
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3382
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .009
<PER-SHARE-GAIN-APPREC> .000
<PER-SHARE-DIVIDEND> (.009)
<PER-SHARE-DISTRIBUTIONS> .000
<RETURNS-OF-CAPITAL> .000
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .006
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
