PAGE 1
000 A000000 10/31/2011
000 C000000 0000879361
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 BLACKROCK MUNIYIELD FUND, INC.
001 B000000 811-06414
001 C000000 8004417762
002 A000000 100 BELLEVUE PARKWAY
002 B000000 WILMINGTON
002 C000000 DE
002 D010000 19809
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
008 A000001 BLACKROCK ADVISORS, LLC
008 B000001 A
008 C000001 801-47710
008 D010001 WILMINGTON
008 D020001 DE
008 D030001 19809
008 A000002 BLACKROCK INVESTMENT MANAGEMENT, LLC
008 B000002 A
008 C000002 801-56972
008 D010002 PRINCETON
008 D020002 NJ
008 D030002 08540
012 A000001 BNY MELLON SHAREOWNER SERVICES (COMMON)
012 B000001 85-05006
012 C010001 JERSEY CITY
012 C020001 NJ
012 C030001 07310
012 A000002 BNY MELLON SHAREOWNER SERVICES (PREFERRED)
012 B000002 85-05006
012 C010002 JERSEY CITY
012 C020002 NJ
012 C030002 07310
012 A000003 THE BANK OF NEW YORK MELLON FOR VRDP
012 B000003 85-05006
012 C010003 NEW YORK
012 C020003 NY
012 C030003 10289
013 A000001 DELOITTE & TOUCHE LLP
PAGE 2
013 B010001 BOSTON
013 B020001 MA
013 B030001 02116
014 A000001 BLACKROCK CAPITAL MARKETS, LLC
014 B000001 8-67827
014 A000002 BLACKROCK EXECUTION SERVICES
014 B000002 8-48719
014 A000003 BLACKROCK FUND DISTRIBUTION COMPANY
014 B000003 8-67795
014 A000004 BLACKROCK INVESTMENTS, LLC
014 B000004 8-48436
014 A000005 HARRIS WILLIAMS LLC
014 B000005 8-53380
014 A000006 PNC CAPITAL MARKETS, INC.
014 B000006 8-32493
014 A000007 PNC INVESTMENTS LLC
014 B000007 8-66195
015 A000001 THE BANK OF NEW YORK MELLON
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10286
015 E010001 X
015 A000002 J.P. MORGAN CHASE BANK
015 B000002 S
015 C010002 NEW YORK
015 C020002 NY
015 C030002 10017
015 E010002 X
018 000000 Y
019 A000000 Y
019 B000000 288
019 C000000 BLKRKADVSR
020 A000001 UBS SECURITIES LLC
020 B000001 13-3873456
020 C000001 2
021 000000 2
022 A000001 FFI INSTITUTIONAL TAX-EXEMPT FUND
022 B000001 22-2509978
022 C000001 78547
022 D000001 71457
022 A000002 J.P. MORGAN SECURITIES INC.
022 B000002 13-3299429
022 C000002 22783
022 D000002 6426
022 A000003 GOLDMAN, SACHS + CO
022 B000003 13-5108880
022 C000003 23336
022 D000003 0
022 A000004 JEFFERIES & COMPANY, INC.
022 B000004 95-2622990
PAGE 3
022 C000004 9511
022 D000004 8643
022 A000005 BARCLAYS CAPITAL INC.
022 B000005 13-3299429
022 C000005 13827
022 D000005 3936
022 A000006 CITIGROUP GLOBAL MARKETS INC
022 B000006 11-2418191
022 C000006 6230
022 D000006 3015
022 A000007 SIEBERT, BRANDFORD, SHANK & CO., L.L.C.
022 C000007 7700
022 D000007 0
022 A000008 RBC CAPITAL MARKETS CORPORATION
022 B000008 13-5033225
022 C000008 0
022 D000008 7565
022 A000009 STONE & YOUNGBERG LLC
022 B000009 94-1052545
022 C000009 0
022 D000009 6810
022 A000010 MORGAN STANLEY & CO. INCORPORATED
022 B000010 13-2655998
022 C000010 3306
022 D000010 3374
023 C000000 174797
023 D000000 129812
024 000000 N
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
PAGE 4
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.500
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
PAGE 5
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 Y
053 B000000 Y
053 C000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 N
060 B000000 N
061 000000 0
062 A000000 Y
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 1.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
PAGE 6
062 K000000 0.0
062 L000000 3.6
062 M000000 0.0
062 N000000 0.0
062 O000000 153.4
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 22.3
064 A000000 Y
064 B000000 Y
065 000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 N
070 B010000 N
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 Y
070 E020000 Y
070 F010000 N
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 N
070 J020000 N
070 K010000 Y
070 K020000 Y
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
PAGE 7
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 89627
071 B000000 97779
071 C000000 984843
071 D000000 9
072 A000000 6
072 B000000 28541
072 C000000 0
072 D000000 0
072 E000000 6
072 F000000 2519
072 G000000 83
072 H000000 0
072 I000000 30
072 J000000 25
072 K000000 0
072 L000000 24
072 M000000 34
072 N000000 9
072 O000000 0
072 P000000 863
072 Q000000 0
072 R000000 33
072 S000000 66
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 794
072 X000000 4480
072 Y000000 2
072 Z000000 24069
072AA000000 0
072BB000000 3201
072CC010000 46846
072CC020000 0
072DD010000 22777
072DD020000 0
072EE000000 0
073 A010000 0.4950
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 248
074 B000000 0
074 C000000 6640
074 D000000 991645
074 E000000 0
074 F000000 0
074 G000000 0
PAGE 8
074 H000000 0
074 I000000 23365
074 J000000 5524
074 K000000 0
074 L000000 16233
074 M000000 925
074 N000000 1044580
074 O000000 17780
074 P000000 428
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 128531
074 S000000 251400
074 T000000 646441
074 U010000 46094
074 U020000 0
074 V010000 14.02
074 V020000 0.00
074 W000000 0.0000
074 X000000 20979
074 Y000000 280029
075 A000000 0
075 B000000 1002058
076 000000 14.28
077 A000000 Y
077 E000000 Y
077 I000000 Y
077 O000000 Y
077 Q010000 Y
078 000000 N
080 C000000 0
081 B000000 0
082 B000000 0
083 B000000 0
084 B000000 0
086 A010000 202
086 A020000 2759
086 B010000 0
086 B020000 0
086 C010000 2514
086 C020000 251400
086 D010000 10058
086 D020000 251450
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 09253W104
PAGE 9
087 A030000 MYD
087 B010000 PREFERRED STOCK
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 Y
SIGNATURE NEAL J. ANDREWS
TITLE CFO