<PAGE> PAGE 1
000 B000000 10/31/96
000 C000000 0000311884
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 FIDELITY BEACON STREET TRUST
001 B000000 811-4508
001 C000000 2145844081
002 A000000 1201 N. MARKET ST. P.O. BOX 1347
002 B000000 WILMINGTON
002 C000000 DE
002 D010000 19899
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 2
007 C010100 1
007 C020100 FIDELITY MUNICIPAL MONEY MARKET FUND
007 C030100 N
007 C010200 2
007 C020200 SPARTAN NEW JERSEY MUNICIPAL MONEY MARKET
007 C030200 N
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 FIDELITY MANAGEMENT & RESEARCH CO.
008 B00AA01 A
008 C00AA01 801-7884
008 D01AA01 BOSTON
008 D02AA01 MA
008 D03AA01 02109
008 A00AA02 FMR TEXAS INC.
008 B00AA02 S
008 C00AA02 801-3720
008 D01AA02 IRVING
008 D02AA02 TX
008 D03AA02 75039
011 A00AA01 FIDELITY DISTRIBUTORS CORPORATION
011 B00AA01 8-8775
011 C01AA01 BOSTON
<PAGE> PAGE 2
011 C02AA01 MA
011 C03AA01 02109
012 A00AA01 UMB BANK, N.A.
012 B00AA01 84-00000
012 C01AA01 KANSAS CITY
012 C02AA01 MO
012 C03AA01 64106
012 A00AA02 FIDELITY SERVICE CO.
012 B00AA02 84-00216
012 C01AA02 BOSTON
012 C02AA02 MA
012 C03AA02 02109
013 A00AA01 PRICE WATERHOUSE LLP
013 B01AA01 DALLAS
013 B02AA01 TX
013 B03AA01 75201
014 A00AA01 FIDELITY BROKERAGE SERVICES, INC.
014 B00AA01 8-23292
014 A00AA02 FIDELITY DISTRIBUTORS CORPORATION
014 B00AA02 8-8775
015 A00AA01 UMB BANK, N.A.
015 B00AA01 C
015 C01AA01 KANSAS CITY
015 C02AA01 MO
015 C03AA01 64141
015 E01AA01 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 238
019 C00AA00 FIDELITYZZ
020 C000001 0
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 GOLDMAN, SACHS & CO.
022 B000001 13-5108880
022 C000001 3400786
022 D000001 319947
022 A000002 MERRILL LYNCH, INC.
022 B000002 13-2518466
022 C000002 847536
022 D000002 412551
022 A000003 SMITH BARNEY SHEARSON, INC.
022 B000003 13-1912900
<PAGE> PAGE 3
022 C000003 673475
022 D000003 565046
022 A000004 LEHMAN BROTHERS, INC.
022 B000004 13-5674085
022 C000004 859811
022 D000004 238440
022 A000005 MORGAN (J.P.) SECURITIES, INC.
022 B000005 13-3379014
022 C000005 618624
022 D000005 256866
022 A000006 PAINE WEBBER, INC.
022 B000006 13-2638166
022 C000006 503748
022 D000006 280521
022 A000007 MORGAN STANLEY & CO., INC.
022 B000007 13-2655998
022 C000007 397999
022 D000007 213695
022 A000008 FIDELITY INSTITUTIONAL TAX-EXEMPT CASH PORT.
022 B000008 04-6532060
022 C000008 219382
022 D000008 364900
022 A000009 BT SECURITIES, INC.
022 B000009 13-3224016
022 C000009 240989
022 D000009 250379
022 A000010 FIRST CHICAGO CAPITAL MARKETS, INC.
022 B000010 36-3595942
022 C000010 244661
022 D000010 182714
023 C000000 10846198
023 D000000 5944472
024 00AA00 N
025 D00AA01 0
025 D00AA02 0
025 D00AA03 0
025 D00AA04 0
025 D00AA05 0
025 D00AA06 0
025 D00AA07 0
025 D00AA08 0
026 A000000 Y
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 Y
026 G010000 Y
026 G020000 N
026 H000000 Y
027 000000 Y
<PAGE> PAGE 4
029 00AA00 N
030 A00AA00 0
030 B00AA00 0.00
030 C00AA00 0.00
031 A00AA00 0
031 B00AA00 0
032 00AA00 0
033 00AA00 0
034 00AA00 N
035 00AA00 0
036 B00AA00 0
037 00AA00 N
038 00AA00 0
039 00AA00 N
040 00AA00 Y
041 00AA00 N
042 A00AA00 0
042 B00AA00 0
042 C00AA00 0
042 D00AA00 0
042 E00AA00 0
042 F00AA00 0
042 G00AA00 0
042 H00AA00 0
043 00AA00 0
044 00AA00 0
055 A00AA00 N
055 B00AA00 N
056 00AA00 Y
057 00AA00 N
066 A00AA00 N
067 00AA00 N
068 A00AA00 N
068 B00AA00 N
069 00AA00 N
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
<PAGE> PAGE 5
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 N
080 A00AA00 FEDERAL INSURANCE COMPANY
080 B00AA00 NATIONAL UNION INSURANCE COMPANY
080 C00AA00 220000
081 A00AA00 Y
081 B00AA00 236
082 A00AA00 N
082 B00AA00 0
083 A00AA00 N
083 B00AA00 0
084 A00AA00 N
084 B00AA00 0
085 A00AA00 Y
085 B00AA00 N
028 A010100 911965
028 A020100 9623
028 A030100 0
028 A040100 992547
028 B010100 813584
028 B020100 8445
028 B030100 0
028 B040100 874734
028 C010100 929176
028 C020100 8287
028 C030100 0
028 C040100 879005
028 D010100 879593
028 D020100 9431
028 D030100 0
028 D040100 836893
028 E010100 830457
028 E020100 9240
028 E030100 0
028 E040100 818819
028 F010100 934332
028 F020100 9448
028 F030100 0
028 F040100 965489
028 G010100 5299107
028 G020100 54474
028 G030100 0
028 G040100 5367487
028 H000100 0
045 000100 Y
046 000100 N
047 000100 N
048 000100 0.000
048 A010100 0
<PAGE> PAGE 6
048 A020100 0.000
048 B010100 0
048 B020100 0.000
048 C010100 0
048 C020100 0.000
048 D010100 0
048 D020100 0.000
048 E010100 0
048 E020100 0.000
048 F010100 0
048 F020100 0.000
048 G010100 0
048 G020100 0.000
048 H010100 0
048 H020100 0.000
048 I010100 0
048 I020100 0.000
048 J010100 0
048 J020100 0.000
048 K010100 0
048 K020100 0.000
049 000100 N
050 000100 N
051 000100 N
052 000100 Y
053 A000100 Y
053 B000100 Y
053 C000100 N
054 A000100 Y
054 B000100 Y
054 C000100 N
054 D000100 N
054 E000100 N
054 F000100 N
054 G000100 Y
054 H000100 Y
054 I000100 N
054 J000100 Y
054 K000100 N
054 L000100 N
054 M000100 Y
054 N000100 N
054 O000100 Y
058 A000100 N
059 000100 Y
060 A000100 Y
060 B000100 Y
061 000100 5000
062 A000100 Y
062 B000100 0.0
062 C000100 0.0
<PAGE> PAGE 7
062 D000100 0.0
062 E000100 100.0
062 F000100 0.0
062 G000100 0.0
062 H000100 0.0
062 I000100 0.0
062 J000100 0.0
062 K000100 0.0
062 L000100 0.0
062 M000100 0.0
062 N000100 0.0
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.0
063 A000100 69
063 B000100 0.0
064 A000100 Y
064 B000100 N
070 A010100 Y
070 A020100 N
070 B010100 N
070 B020100 N
070 C010100 N
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 N
070 E020100 N
070 F010100 N
070 F020100 N
070 G010100 N
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 N
070 L020100 N
070 M010100 N
070 M020100 N
070 N010100 N
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 Y
<PAGE> PAGE 8
070 Q010100 Y
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 0
071 B000100 0
071 C000100 0
071 D000100 0
072 A000100 12
072 B000100 132766
072 C000100 0
072 D000100 0
072 E000100 0
072 F000100 10874
072 G000100 0
072 H000100 0
072 I000100 6388
072 J000100 184
072 K000100 0
072 L000100 0
072 M000100 25
072 N000100 164
072 O000100 0
072 P000100 0
072 Q000100 402
072 R000100 44
072 S000100 18
072 T000100 0
072 U000100 0
072 V000100 0
072 W000100 8
072 X000100 18107
072 Y000100 4
072 Z000100 114663
072AA000100 0
072BB000100 524
072CC010100 0
072CC020100 0
072DD010100 114663
072DD020100 0
072EE000100 0
073 A010100 0.0312
073 A020100 0.0000
073 B000100 0.0000
073 C000100 0.0000
074 A000100 0
074 B000100 0
074 C000100 3677519
074 D000100 0
074 E000100 0
074 F000100 0
<PAGE> PAGE 9
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 33452
074 K000100 0
074 L000100 46337
074 M000100 0
074 N000100 3757308
074 O000100 80875
074 P000100 902
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 1199
074 S000100 0
074 T000100 3674332
074 U010100 3674966
074 U020100 0
074 V010100 1.00
074 V020100 0.00
074 W000100 1.0001
074 X000100 130903
074 Y000100 0
075 A000100 3673343
075 B000100 0
076 000100 0.00
028 A010200 34987
028 A020200 1355
028 A030200 0
028 A040200 32478
028 B010200 27986
028 B020200 1202
028 B030200 0
028 B040200 33186
028 C010200 33942
028 C020200 1154
028 C030200 0
028 C040200 34511
028 D010200 36979
028 D020200 1301
028 D030200 0
028 D040200 26605
028 E010200 30713
028 E020200 1257
028 E030200 0
028 E040200 35911
028 F010200 39673
028 F020200 1311
028 F030200 0
028 F040200 30809
<PAGE> PAGE 10
028 G010200 204280
028 G020200 7580
028 G030200 0
028 G040200 193500
028 H000200 0
045 000200 Y
046 000200 N
047 000200 Y
048 000200 0.500
048 A010200 0
048 A020200 0.000
048 B010200 0
048 B020200 0.000
048 C010200 0
048 C020200 0.000
048 D010200 0
048 D020200 0.000
048 E010200 0
048 E020200 0.000
048 F010200 0
048 F020200 0.000
048 G010200 0
048 G020200 0.000
048 H010200 0
048 H020200 0.000
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
054 A000200 Y
054 B000200 Y
054 C000200 Y
054 D000200 Y
054 E000200 Y
054 F000200 Y
054 G000200 Y
054 H000200 Y
054 I000200 N
054 J000200 Y
054 K000200 Y
054 L000200 Y
054 M000200 Y
<PAGE> PAGE 11
054 N000200 Y
054 O000200 Y
058 A000200 N
059 000200 Y
060 A000200 N
060 B000200 N
061 000200 25000
062 A000200 Y
062 B000200 0.0
062 C000200 0.0
062 D000200 0.0
062 E000200 100.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
062 K000200 0.0
062 L000200 0.0
062 M000200 0.0
062 N000200 0.0
062 O000200 0.0
062 P000200 0.0
062 Q000200 0.0
062 R000200 0.0
063 A000200 57
063 B000200 0.0
064 A000200 Y
064 B000200 N
070 A010200 Y
070 A020200 N
070 B010200 N
070 B020200 N
070 C010200 N
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 N
070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 N
070 K010200 Y
070 K020200 N
<PAGE> PAGE 12
070 L010200 N
070 L020200 N
070 M010200 N
070 M020200 N
070 N010200 N
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 Y
070 P020200 Y
070 Q010200 Y
070 Q020200 N
070 R010200 Y
070 R020200 N
071 A000200 0
071 B000200 0
071 C000200 0
071 D000200 0
072 A000200 12
072 B000200 17375
072 C000200 0
072 D000200 0
072 E000200 0
072 F000200 2454
072 G000200 0
072 H000200 0
072 I000200 0
072 J000200 0
072 K000200 0
072 L000200 0
072 M000200 1
072 N000200 0
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 0
072 S000200 0
072 T000200 0
072 U000200 0
072 V000200 0
072 W000200 0
072 X000200 2455
072 Y000200 787
072 Z000200 15707
072AA000200 0
072BB000200 2
072CC010200 0
072CC020200 0
072DD010200 15707
072DD020200 0
072EE000200 0
<PAGE> PAGE 13
073 A010200 0.0320
073 A020200 0.0000
073 B000200 0.0000
073 C000200 0.0000
074 A000200 274
074 B000200 0
074 C000200 503047
074 D000200 0
074 E000200 0
074 F000200 0
074 G000200 0
074 H000200 0
074 I000200 0
074 J000200 0
074 K000200 0
074 L000200 4377
074 M000200 0
074 N000200 507698
074 O000200 2640
074 P000200 148
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 35
074 S000200 0
074 T000200 504875
074 U010200 504890
074 U020200 0
074 V010200 1.00
074 V020200 0.00
074 W000200 1.0001
074 X000200 3828
074 Y000200 0
075 A000200 491056
075 B000200 0
076 000200 0.00
SIGNATURE JOHN H. COSTELLO
TITLE ASSISTANT TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000311884
<NAME> Fidelity Beacon Street Trust
<SERIES>
<NUMBER> 11
<NAME> Fidelity Municipal Money Market Fund
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
year
<FISCAL-YEAR-END>
oct-31-1996
<PERIOD-END>
oct-31-1996
<INVESTMENTS-AT-COST>
3,677,519
<INVESTMENTS-AT-VALUE>
3,677,519
<RECEIVABLES>
79,789
<ASSETS-OTHER>
0
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
3,757,308
<PAYABLE-FOR-SECURITIES>
80,875
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
2,101
<TOTAL-LIABILITIES>
82,976
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
3,674,966
<SHARES-COMMON-STOCK>
3,674,966
<SHARES-COMMON-PRIOR>
3,605,902
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(634)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
3,674,332
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
132,766
<OTHER-INCOME>
0
<EXPENSES-NET>
18,103
<NET-INVESTMENT-INCOME>
114,663
<REALIZED-GAINS-CURRENT>
(524)
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
114,139
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
114,663
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
11,031,824
<NUMBER-OF-SHARES-REDEEMED>
11,072,668
<SHARES-REINVESTED>
109,908
<NET-CHANGE-IN-ASSETS>
68,540
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(110)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
10,874
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
18,107
<AVERAGE-NET-ASSETS>
3,673,343
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.031
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.031
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
49
<AVG-DEBT-OUTSTANDING>
0
<AVG-DEBT-PER-SHARE>
0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000311884
<NAME> Fidelity Beacon Street Trust
<SERIES>
<NUMBER> 21
<NAME> Spartan New Jersey Municipal Money Market Fund
<MULTIPLIER> 1,000
<S>
<C>
<PERIOD-TYPE>
year
<FISCAL-YEAR-END>
oct-31-1996
<PERIOD-END>
oct-31-1996
<INVESTMENTS-AT-COST>
503,047
<INVESTMENTS-AT-VALUE>
503,047
<RECEIVABLES>
4,377
<ASSETS-OTHER>
274
<OTHER-ITEMS-ASSETS>
0
<TOTAL-ASSETS>
507,698
<PAYABLE-FOR-SECURITIES>
2,640
<SENIOR-LONG-TERM-DEBT>
0
<OTHER-ITEMS-LIABILITIES>
183
<TOTAL-LIABILITIES>
2,823
<SENIOR-EQUITY>
0
<PAID-IN-CAPITAL-COMMON>
504,890
<SHARES-COMMON-STOCK>
504,890
<SHARES-COMMON-PRIOR>
469,846
<ACCUMULATED-NII-CURRENT>
0
<OVERDISTRIBUTION-NII>
0
<ACCUMULATED-NET-GAINS>
(15)
<OVERDISTRIBUTION-GAINS>
0
<ACCUM-APPREC-OR-DEPREC>
0
<NET-ASSETS>
504,875
<DIVIDEND-INCOME>
0
<INTEREST-INCOME>
17,375
<OTHER-INCOME>
0
<EXPENSES-NET>
1,668
<NET-INVESTMENT-INCOME>
15,707
<REALIZED-GAINS-CURRENT>
(3)
<APPREC-INCREASE-CURRENT>
0
<NET-CHANGE-FROM-OPS>
15,704
<EQUALIZATION>
0
<DISTRIBUTIONS-OF-INCOME>
15,707
<DISTRIBUTIONS-OF-GAINS>
0
<DISTRIBUTIONS-OTHER>
0
<NUMBER-OF-SHARES-SOLD>
467,178
<NUMBER-OF-SHARES-REDEEMED>
447,415
<SHARES-REINVESTED>
15,281
<NET-CHANGE-IN-ASSETS>
35,041
<ACCUMULATED-NII-PRIOR>
0
<ACCUMULATED-GAINS-PRIOR>
(12)
<OVERDISTRIB-NII-PRIOR>
0
<OVERDIST-NET-GAINS-PRIOR>
0
<GROSS-ADVISORY-FEES>
2,454
<INTEREST-EXPENSE>
0
<GROSS-EXPENSE>
2,455
<AVERAGE-NET-ASSETS>
491,056
<PER-SHARE-NAV-BEGIN>
1.000
<PER-SHARE-NII>
.032
<PER-SHARE-GAIN-APPREC>
0
<PER-SHARE-DIVIDEND>
.032
<PER-SHARE-DISTRIBUTIONS>
0
<RETURNS-OF-CAPITAL>
0
<PER-SHARE-NAV-END>
1.000
<EXPENSE-RATIO>
34
<AVG-DEBT-OUTSTANDING>
0
<AVG-DEBT-PER-SHARE>
0
</TABLE>