PAGE 1
000 B000000 07/31/2014
000 C000000 0001244183
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 PIMCO INCOME STRATEGY FUND
001 B000000 811-21374
001 C000000 2127393000
002 A000000 1633 BROADWAY
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10019
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
008 A000001 ALLIANZ GLOBAL INVESTORS FUND MANAGEMENT LLC
008 B000001 A
008 C000001 801-57798
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10019
008 A000002 PACIFIC INVESTMENT MANAGEMENT COMPANY LLC
008 B000002 S
008 C000002 801-48187
008 D010002 NEWPORT BEACH
008 D020002 CA
008 D030002 92660
010 A000001 ALLIANZ GLOBAL INVESTORS FUND MANAGEMENT LLC
010 B000001 801-57798
010 C010001 NEW YORK
010 C020001 NY
010 C030001 10019
012 A000001 American Stock Transfer & Trust Company LLC
012 B000001 84-00416
012 C010001 Brooklyn
012 C020001 NY
012 C030001 11219
013 A000001 PRICEWATERHOUSECOOPERS LLP
013 B010001 KANSAS CITY
013 B020001 MO
013 B030001 64106
014 A000001 ALLIANZ GLOBAL INVESTORS DISTRIBUTORS LLC
014 B000001 8-041811
PAGE 2
014 A000002 PIMCO INVESTMENTS LLC
014 B000002 8-68686
014 A000003 PIMCO DEUTSCHLAND GMBH
014 B000003 8-00000
014 A000004 ALLIANZ LIFE FINANCIAL SERVICES, LLC
014 B000004 8-13630
014 A000005 QUESTAR CAPITAL CORPORATION
014 B000005 8-50174
015 A000001 STATE STREET BANK & TRUST COMPANY
015 B000001 C
015 C010001 KANSAS CITY
015 C020001 MO
015 C030001 64105
015 E010001 X
015 A000002 CLEARSTREAM BANKING S.A.
015 B000002 S
015 C010002 LUXEMBOURG
015 D010002 LUXEMBOURG
015 E040002 X
015 A000003 CITIBANK N.A. - BRAZIL
015 B000003 S
015 C010003 SAO PAULO
015 D010003 BRAZIL
015 E040003 X
018 000000 Y
019 A000000 Y
019 B000000 82
019 C000000 ALLIANZGLO
020 A000001 ROYAL BANK OF CANADA
020 C000001 1
020 A000002 THE GOLDMAN SACHS GROUP, INC.
020 B000002 13-4019460
020 C000002 0
020 A000003 KNIGHT CAPITAL MARKETS LLC
020 B000003 22-3791454
020 C000003 0
020 A000004 BANK OF AMERICA CORP.
020 B000004 56-0906609
020 C000004 0
021 000000 1
022 A000001 CITIGROUP, INC.
022 B000001 52-1568099
022 C000001 2000592
022 D000001 0
022 A000002 BNP PARIBAS SECURITIES CORP.
022 B000002 13-3235334
022 C000002 1885800
022 D000002 10652
022 A000003 MORGAN STANLEY & CO.
022 B000003 36-3145972
022 C000003 1835621
PAGE 3
022 D000003 0
022 A000004 ROYAL BANK OF CANADA
022 C000004 1695879
022 D000004 26174
022 A000005 BANK OF NEW YORK CO., INC.
022 B000005 13-2614959
022 C000005 1539400
022 D000005 4927
022 A000006 JPMORGAN CHASE & CO.
022 B000006 13-3224016
022 C000006 1382061
022 D000006 19514
022 A000007 BANK OF AMERICA CORP.
022 B000007 56-0906609
022 C000007 951864
022 D000007 52449
022 A000008 BARCLAYS CAPITAL, INC.
022 B000008 06-1031656
022 C000008 721995
022 D000008 13777
022 A000009 DEUTSCHE BANK AG
022 B000009 13-2944980
022 C000009 720260
022 D000009 2
022 A000010 STATE STREET BANK & TRUST COMPANY
022 B000010 04-2456637
022 C000010 451923
022 D000010 138713
023 C000000 13752097
023 D000000 431401
024 000000 Y
025 A000001 BANK OF AMERICA CORP.
025 B000001 56-0906609
025 C000001 D
025 D000001 32170
025 A000002 BARCLAYS CAPITAL, INC.
025 B000002 06-1031656
025 C000002 D
025 D000002 22783
025 A000003 CITIGROUP, INC.
025 B000003 52-1568099
025 C000003 D
025 D000003 15290
025 A000004 JPMORGAN CHASE & CO.
025 B000004 13-3224016
025 C000004 D
025 D000004 13745
025 A000005 THE GOLDMAN SACHS GROUP, INC.
025 B000005 13-4019460
025 C000005 D
025 D000005 4575
PAGE 4
025 A000006 STATE STREET BANK & TRUST COMPANY
025 B000006 04-2456637
025 C000006 D
025 D000006 584
025 A000007 MORGAN STANLEY
025 B000007 36-3145972
025 C000007 D
025 D000007 406
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
PAGE 5
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 0.750
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 N
053 A000000 Y
053 B000000 N
053 C000000 N
054 A000000 Y
054 B000000 Y
PAGE 6
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
055 A000000 Y
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 0.3
062 C000000 0.0
062 D000000 3.8
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 31.6
062 O000000 5.2
062 P000000 32.1
062 Q000000 24.3
062 R000000 4.5
063 A000000 0
063 B000000 12.5
064 A000000 N
064 B000000 Y
065 000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
PAGE 7
070 A020000 Y
070 B010000 N
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 Y
070 D020000 N
070 E010000 Y
070 E020000 N
070 F010000 Y
070 F020000 N
070 G010000 Y
070 G020000 N
070 H010000 Y
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 Y
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 Y
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 N
071 A000000 431335
071 B000000 367716
071 C000000 324193
071 D000000 113
072 A000000 12
072 B000000 22439
072 C000000 1021
072 D000000 0
072 E000000 0
072 F000000 2839
072 G000000 0
072 H000000 0
072 I000000 25
072 J000000 214
072 K000000 0
072 L000000 48
PAGE 8
072 M000000 26
072 N000000 0
072 O000000 0
072 P000000 3
072 Q000000 0
072 R000000 120
072 S000000 129
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 194
072 X000000 3598
072 Y000000 78
072 Z000000 19940
072AA000000 14120
072BB000000 0
072CC010000 5796
072CC020000 0
072DD010000 27203
072DD020000 0
072EE000000 0
073 A010000 1.0800
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 387
074 B000000 14784
074 C000000 1140
074 D000000 359054
074 E000000 17282
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 63228
074 K000000 0
074 L000000 3703
074 M000000 801
074 N000000 460379
074 O000000 22123
074 P000000 258
074 Q000000 0
074 R010000 47659
074 R020000 0
074 R030000 0
074 R040000 4889
074 S000000 78975
074 T000000 306475
074 U010000 25214
074 U020000 0
074 V010000 12.15
PAGE 9
074 V020000 0.00
074 W000000 0.0000
074 X000000 21
074 Y000000 1140
075 A000000 0
075 B000000 376049
076 000000 11.87
077 A000000 Y
077 B000000 Y
077 C000000 Y
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
077 Q010000 Y
077 Q020000 N
077 Q030000 N
078 000000 N
080 A000000 Great American Insurance Group
080 B000000 National Union Fire Insurance Company
080 C000000 67500
081 A000000 Y
081 B000000 81
082 A000000 Y
082 B000000 250
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
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
PAGE 10
086 F020000 0
087 A010000 COMMON
087 A020000 72201H108
087 A030000 PFL
087 B010000 PREFERRED
087 B020000 72201H207
087 B030000 SERIES T
087 C010000 PREFERRED
087 C020000 72201H306
087 C030000 SERIES W
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 Y
SIGNATURE WILLIAM G. GALIPEAU
TITLE TREASURER