PAGE 1
000 A000000 09/30/2013
000 C000000 0000890119
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 NUVEEN SELECT MATURITIES MUNICIPAL FUND
001 B000000 811-07056
001 C000000 3129178200
002 A000000 333 WEST WACKER DRIVE
002 B000000 CHICAGO
002 C000000 IL
002 D010000 60606
002 D020000 1286
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
008 A000001 NUVEEN FUND ADVISORS, LLC
008 B000001 A
008 C000001 801-14147
008 D010001 CHICAGO
008 D020001 IL
008 D030001 60606
008 D040001 1286
008 A000002 NUVEEN ASSET MANAGEMENT, LLC
008 B000002 S
008 C000002 801-71957
008 D010002 CHICAGO
008 D020002 IL
008 D030002 60606
008 D040002 1286
012 A000001 COMPUTERSHARE INC.
012 B000001 84-05925
012 C010001 PROVIDENCE
012 C020001 RI
012 C030001 02940
013 A000001 ERNST & YOUNG LLP
013 B010001 CHICAGO
013 B020001 IL
013 B030001 60606
014 A000001 NUVEEN INVESTMENTS, LLC
014 B000001 8-13464
015 A000001 STATE STREET BANK AND TRUST COMPANY
015 B000001 C
PAGE 2
015 C010001 BOSTON
015 C020001 MA
015 C030001 02110
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 206
019 C000000 NUVEENFUND
021 000000 0
022 A000001 THE MUNI CENTER INC
022 B000001 06-1585654
022 C000001 2046
022 D000001 5
022 A000002 CITIGROUP
022 B000002 13-3214963
022 C000002 1992
022 D000002 0
022 A000003 MORGAN STANLEY
022 B000003 13-2655998
022 C000003 767
022 D000003 0
022 A000004 JP MORGAN CHASE
022 B000004 13-3224016
022 C000004 709
022 D000004 0
022 A000005 GOLDMAN SACHS
022 B000005 13-5108880
022 C000005 559
022 D000005 126
022 A000006 PNC SECURITIES CORP
022 B000006 25-1471636
022 C000006 642
022 D000006 0
022 A000007 GMS GROUP LLC
022 B000007 13-2982938
022 C000007 614
022 D000007 0
022 A000008 WELLS FARGO
022 B000008 41-1508325
022 C000008 566
022 D000008 0
022 A000009 LOOP CAPITAL MARKETS
022 B000009 36-4164012
022 C000009 371
022 D000009 0
022 A000010 MERRILL LYNCH
022 B000010 13-5674085
022 C000010 313
022 D000010 0
023 C000000 10157
023 D000000 131
PAGE 3
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
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
PAGE 4
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 N
048 000000 0.000
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
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 Y
053 A000000 N
054 A000000 Y
054 B000000 N
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
PAGE 5
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 0
062 A000000 Y
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
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 96.5
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 6.9
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 N
PAGE 6
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 Y
070 J020000 N
070 K010000 N
070 K020000 N
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 N
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 10157
071 B000000 12209
071 C000000 126277
071 D000000 8
072 A000000 6
072 B000000 2595
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 303
072 G000000 0
072 H000000 0
072 I000000 3
072 J000000 21
072 K000000 8
072 L000000 16
072 M000000 2
072 N000000 0
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 8
072 S000000 3
072 T000000 0
072 U000000 0
PAGE 7
072 V000000 0
072 W000000 10
072 X000000 374
072 Y000000 0
072 Z000000 2221
072AA000000 142
072BB000000 0
072CC010000 0
072CC020000 5130
072DD010000 2152
072DD020000 0
072EE000000 0
073 A010000 0.1730
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 1044
074 B000000 0
074 C000000 0
074 D000000 122946
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 2513
074 K000000 0
074 L000000 1614
074 M000000 3
074 N000000 128120
074 O000000 327
074 P000000 49
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 387
074 S000000 0
074 T000000 127357
074 U010000 12439
074 U020000 0
074 V010000 10.24
074 V020000 0.00
074 W000000 0.0000
074 X000000 213
074 Y000000 126197
075 A000000 0
075 B000000 129303
076 000000 9.73
077 A000000 N
078 000000 N
PAGE 8
080 C000000 0
081 B000000 0
082 B000000 0
083 B000000 0
084 B000000 0
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 67061T101
087 A030000 NIM
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 N
SIGNATURE STEPHEN D. FOY
TITLE V.P. & CONTROLLER