<PAGE> PAGE 1
000 A000000 08/31/97
000 C000000 0000862501
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 SALOMON BROTHERS INSTL SERIES FUNDS INC
001 B000000 811-07497
001 C000000 2127831301
002 A000000 7 WORLD TRADE CENTER
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10048
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 3
007 C010100 1
007 C020100 SALOMON BROTHERS INSTL HIGH YIELD BOND FUND
007 C030100 N
007 C010200 2
007 C020200 SALOMON BROTHERS INSTL ASIA GROWTH FUND
007 C030200 N
007 C010300 3
007 C020300 SALOMON BROTHERS INSTL EMERGING MKT DEBT FUND
007 C030300 N
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
010 A00AA01 INVESTORS BANK & TRUST COMPANY
010 B00AA01 85-720
010 C01AA01 BOSTON
010 C02AA01 MA
010 C03AA01 02116
012 A00AA01 FIRST DATA INVESTOR SERVICES GROUP
012 B00AA01 84-01761
012 C01AA01 BOSTON
012 C02AA01 MA
012 C03AA01 02205
013 A00AA01 PRICE WATERHOUSE LLP
013 B01AA01 NEW YORK
013 B02AA01 NY
<PAGE> PAGE 2
013 B03AA01 10036
014 A00AA01 SALOMON BROTHERS INC
014 B00AA01 8-26920
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 4
019 C00AA00 SALOMONFDS
020 A000001 CREDIT LYONNAIS SECURITIES ASIA/HONG KONG
020 C000001 24
020 A000002 MORGAN STANLEY
020 B000002 13-2655998
020 C000002 15
020 A000003 W.I. CARR (FAR EAST) LTD
020 B000003 13-2927466
020 C000003 9
020 A000004 PEREGRINE INVESTMENTS (SINGAPORE) PTE LTD
020 B000004 13-3351177
020 C000004 8
020 A000005 GK GOH SECURITIES HONG KONG LTD
020 C000005 4
020 A000006 MORGAN GRENFELL
020 B000006 13-2655998
020 C000006 2
020 A000007 CAPITAL CORP
020 C000007 1
020 A000008 PRESSBRIDGE
020 C000008 1
020 A000009 JARDINE FLEMING
020 C000009 1
020 A000010 TRANSAMERICA FINANCIAL RESOURCES
020 C000010 1
021 000000 66
022 A000001 UBS SECURITIES
022 B000001 13-2932996
022 C000001 39081
022 D000001 765
022 A000002 J.P. MORGAN SECURITIES INC
022 B000002 13-3224016
022 C000002 32629
022 D000002 5671
022 A000003 MERRILL LYNCH PIERCE FENNER & SMITH
022 B000003 13-5674085
022 C000003 27588
022 D000003 1699
022 A000004 STATE STREET BANK & TRUST
022 C000004 17969
022 D000004 0
022 A000005 CHASE MANHATTAN BANK
022 B000005 13-3112953
022 C000005 10064
022 D000005 7007
<PAGE> PAGE 3
022 A000006 BANK OF BOSTON
022 B000006 04-2472499
022 C000006 2206
022 D000006 5878
022 A000007 GOLDMAN SACHS
022 B000007 13-4941247
022 C000007 5883
022 D000007 829
022 A000008 INTERNATIONAL NEDERLANDEN
022 C000008 3452
022 D000008 2622
022 A000009 LEHMAN BROTHERS
022 C000009 2854
022 D000009 2154
022 A000010 SANTANDER INVESTMENT SECURITIES
022 C000010 594
022 D000010 1656
023 C000000 148398
023 D000000 35588
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 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 Y
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
<PAGE> PAGE 4
039 00AA00 N
040 00AA00 N
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
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 Y
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 Y
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 Y
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 N
077 A000000 N
078 000000 N
080 C00AA00 0
081 B00AA00 0
082 B00AA00 0
083 B00AA00 0
084 B00AA00 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
008 A000101 SALOMON BROTHERS ASSET MANAGEMENT INC
008 B000101 A
008 C000101 801-32046
008 D010101 NEW YORK
<PAGE> PAGE 5
008 D020101 NY
008 D030101 10048
015 A000101 INVESTORS BANK & TRUST COMPANY
015 B000101 C
015 C010101 BOSTON
015 C020101 MA
015 C030101 02116
015 E010101 X
015 A000102 CITIBANK
015 B000102 S
015 C010102 NEW YORK
015 C020102 NY
015 C030102 10043
015 E040102 X
015 A000103 BANK OF BOSTON
015 B000103 S
015 C010103 BOSTON
015 C020103 MA
015 C030103 02110
015 E040103 X
015 A000104 CHASE MANHATTAN BANK
015 B000104 S
015 C010104 NEW YORK
015 C020104 NY
015 C030104 10043
015 E040104 X
015 A000105 STATE BANK OF INDIA
015 B000105 S
015 C010105 BOMBAY
015 D010105 INDIA
015 E040105 X
015 A000106 STANDARD CHARTERED BANK
015 B000106 S
015 C010106 LONDON
015 D010106 UNITED KINGDOM
015 E040106 X
015 A000107 BANCOMER S.A.
015 B000107 S
015 C010107 MEXICO CITY
015 D010107 MEXICO
015 E040107 X
028 A010100 0
028 A020100 0
028 A030100 0
028 A040100 0
028 B010100 0
028 B020100 0
028 B030100 0
028 B040100 0
028 C010100 0
028 C020100 0
<PAGE> PAGE 6
028 C030100 0
028 C040100 0
028 D010100 0
028 D020100 297
028 D030100 0
028 D040100 0
028 E010100 0
028 E020100 0
028 E030100 0
028 E040100 0
028 F010100 0
028 F020100 0
028 F030100 0
028 F040100 2399
028 G010100 0
028 G020100 297
028 G030100 0
028 G040100 2399
028 H000100 0
045 000100 Y
046 000100 N
047 000100 Y
048 000100 0.500
048 A010100 0
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 N
053 A000100 Y
053 B000100 Y
<PAGE> PAGE 7
053 C000100 N
055 A000100 N
055 B000100 N
056 000100 Y
057 000100 N
058 A000100 N
059 000100 Y
060 A000100 Y
060 B000100 Y
061 000100 1000000
062 A000100 Y
062 B000100 0.0
062 C000100 0.0
062 D000100 0.0
062 E000100 0.0
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 95.7
062 Q000100 0.0
062 R000100 0.0
063 A000100 0
063 B000100 5.4
064 A000100 N
064 B000100 N
066 A000100 N
067 000100 N
068 A000100 N
068 B000100 N
069 000100 N
070 A010100 Y
070 A020100 Y
070 B010100 Y
070 B020100 N
070 C010100 Y
070 C020100 N
070 D010100 Y
070 D020100 N
070 E010100 Y
070 E020100 N
070 F010100 Y
070 F020100 N
070 G010100 Y
070 G020100 N
<PAGE> PAGE 8
070 H010100 Y
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 Y
070 K010100 Y
070 K020100 N
070 L010100 Y
070 L020100 Y
070 M010100 Y
070 M020100 N
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 4247
071 B000100 6277
071 C000100 6053
071 D000100 70
072 A000100 6
072 B000100 331
072 C000100 0
072 D000100 0
072 E000100 0
072 F000100 16
072 G000100 0
072 H000100 0
072 I000100 1
072 J000100 83
072 K000100 0
072 L000100 3
072 M000100 3
072 N000100 7
072 O000100 0
072 P000100 0
072 Q000100 0
072 R000100 10
072 S000100 1
072 T000100 0
072 U000100 6
072 V000100 0
072 W000100 1
072 X000100 131
072 Y000100 112
<PAGE> PAGE 9
072 Z000100 313
072AA000100 207
072BB000100 22
072CC010100 0
072CC020100 64
072DD010100 126
072DD020100 0
072EE000100 170
073 A010100 0.2100
073 A020100 0.0000
073 B000100 0.2900
073 C000100 0.0000
074 A000100 20
074 B000100 0
074 C000100 0
074 D000100 4412
074 E000100 0
074 F000100 0
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 0
074 K000100 96
074 L000100 83
074 M000100 48
074 N000100 4659
074 O000100 0
074 P000100 0
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 49
074 S000100 0
074 T000100 4610
074 U010100 406
074 U020100 0
074 V010100 11.35
074 V020100 0.00
074 W000100 0.0000
074 X000100 5
074 Y000100 0
075 A000100 0
075 B000100 6515
076 000100 0.00
008 A000201 SALOMON BROTHERS ASSET MANAGEMENT INC
008 B000201 A
008 C000201 801-32046
008 D010201 NEW YORK
008 D020201 NY
008 D030201 10048
<PAGE> PAGE 10
008 A000202 SALOMON BROTHERS ASIA PACIFIC LIMITED
008 B000202 S
008 C000202 801-51393
008 D010202 HONG KONG
008 D050202 HONG KONG
015 A000201 INVESTORS BANK & TRUST COMPANY
015 B000201 C
015 C010201 BOSTON
015 C020201 MA
015 C030201 02116
015 E010201 X
015 A000202 STANDARD CHARTERED BANK
015 B000202 S
015 C010202 LONDON
015 D010202 UNITED KINGDOM
015 E040202 X
015 A000203 STATE BANK OF INDIA
015 B000203 S
015 C010203 BOMBAY
015 D010203 INDIA
015 E040203 X
028 A010200 0
028 A020200 0
028 A030200 0
028 A040200 0
028 B010200 0
028 B020200 0
028 B030200 0
028 B040200 0
028 C010200 0
028 C020200 0
028 C030200 0
028 C040200 0
028 D010200 0
028 D020200 193
028 D030200 0
028 D040200 0
028 E010200 0
028 E020200 0
028 E030200 0
028 E040200 93
028 F010200 0
028 F020200 0
028 F030200 0
028 F040200 0
028 G010200 0
028 G020200 193
028 G030200 0
028 G040200 93
028 H000200 0
045 000200 Y
<PAGE> PAGE 11
046 000200 N
047 000200 Y
048 000200 0.750
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
055 A000200 Y
055 B000200 N
056 000200 Y
057 000200 N
058 A000200 N
059 000200 Y
060 A000200 N
060 B000200 N
061 000200 1000000
062 A000200 N
062 B000200 0.0
062 C000200 0.0
062 D000200 0.0
062 E000200 0.0
062 F000200 0.0
062 G000200 0.0
062 H000200 0.0
062 I000200 0.0
062 J000200 0.0
<PAGE> PAGE 12
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 0
063 B000200 0.0
066 A000200 Y
066 C000200 Y
067 000200 N
068 A000200 N
068 B000200 Y
069 000200 N
070 A010200 Y
070 A020200 N
070 B010200 Y
070 B020200 N
070 C010200 Y
070 C020200 N
070 D010200 Y
070 D020200 Y
070 E010200 Y
070 E020200 N
070 F010200 Y
070 F020200 N
070 G010200 Y
070 G020200 N
070 H010200 Y
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 N
070 K010200 Y
070 K020200 N
070 L010200 Y
070 L020200 Y
070 M010200 Y
070 M020200 Y
070 N010200 Y
070 N020200 N
070 O010200 Y
070 O020200 N
070 P010200 Y
070 P020200 N
070 Q010200 N
070 Q020200 N
070 R010200 N
<PAGE> PAGE 13
070 R020200 N
071 A000200 7365
071 B000200 7648
071 C000200 4934
071 D000200 149
072 A000200 6
072 B000200 2
072 C000200 44
072 D000200 0
072 E000200 0
072 F000200 20
072 G000200 0
072 H000200 0
072 I000200 1
072 J000200 122
072 K000200 0
072 L000200 3
072 M000200 3
072 N000200 7
072 O000200 0
072 P000200 0
072 Q000200 0
072 R000200 8
072 S000200 1
072 T000200 0
072 U000200 8
072 V000200 0
072 W000200 1
072 X000200 174
072 Y000200 147
072 Z000200 19
072AA000200 1417
072BB000200 605
072CC010200 0
072CC020200 786
072DD010200 32
072DD020200 0
072EE000200 161
073 A010200 0.0700
073 A020200 0.0000
073 B000200 0.3500
073 C000200 0.0000
074 A000200 23
074 B000200 0
074 C000200 0
074 D000200 106
074 E000200 0
074 F000200 4288
074 G000200 156
074 H000200 0
074 I000200 93
<PAGE> PAGE 14
074 J000200 352
074 K000200 128
074 L000200 11
074 M000200 58
074 N000200 5215
074 O000200 248
074 P000200 0
074 Q000200 0
074 R010200 0
074 R020200 0
074 R030200 0
074 R040200 72
074 S000200 0
074 T000200 4895
074 U010200 464
074 U020200 0
074 V010200 10.55
074 V020200 0.00
074 W000200 0.0000
074 X000200 6
074 Y000200 0
075 A000200 0
075 B000200 5166
076 000200 0.00
008 A000301 SALOMON BROTHERS ASSET MANAGEMENT INC
008 B000301 A
008 C000301 801-32046
008 D010301 NEW YORK
008 D020301 NY
008 D030301 10048
015 A000301 INVESTORS BANK & TRUST COMPANY
015 B000301 C
015 C010301 BOSTON
015 C020301 MA
015 C030301 02116
015 E010301 X
015 A000302 CITIBANK
015 B000302 S
015 C010302 NEW YORK
015 C020302 NY
015 C030302 10043
015 E040302 X
015 A000303 BANK OF BOSTON
015 B000303 S
015 C010303 BOSTON
015 C020303 MA
015 C030303 02110
015 E040303 X
015 A000304 CHASE MANHATTAN
015 B000304 S
015 C010304 NEW YORK
<PAGE> PAGE 15
015 C020304 NY
015 C030304 10043
015 E040304 X
015 A000305 STATE BANK OF INDIA
015 B000305 S
015 C010305 BOMBAY
015 D010305 INDIA
015 E040305 X
015 A000306 STANDARD CHARTERED BANK
015 B000306 S
015 C010306 LONDON
015 D010306 UNITED KINGDOM
015 E040306 X
015 A000307 BANCOMER S.A.
015 B000307 S
015 C010307 MEXICO CITY
015 D010307 MEXICO
015 E040307 X
015 A000308 CITITRUST COLOMBIA S.A.
015 B000308 S
015 C010308 BOGOTA
015 D010308 COLOMBIA
015 E040308 X
015 A000309 STANDARD BANK OF SOUTH AFRICA
015 B000309 S
015 C010309 JOHANNESBURG
015 D010309 SOUTH AFRICA
015 E040309 X
028 A010300 0
028 A020300 0
028 A030300 0
028 A040300 0
028 B010300 6000
028 B020300 0
028 B030300 0
028 B040300 0
028 C010300 0
028 C020300 0
028 C030300 0
028 C040300 0
028 D010300 0
028 D020300 261
028 D030300 0
028 D040300 0
028 E010300 0
028 E020300 0
028 E030300 0
028 E040300 62
028 F010300 0
028 F020300 0
028 F030300 0
<PAGE> PAGE 16
028 F040300 0
028 G010300 6000
028 G020300 261
028 G030300 0
028 G040300 62
028 H000300 0
045 000300 Y
046 000300 N
047 000300 Y
048 000300 0.700
048 A010300 0
048 A020300 0.000
048 B010300 0
048 B020300 0.000
048 C010300 0
048 C020300 0.000
048 D010300 0
048 D020300 0.000
048 E010300 0
048 E020300 0.000
048 F010300 0
048 F020300 0.000
048 G010300 0
048 G020300 0.000
048 H010300 0
048 H020300 0.000
048 I010300 0
048 I020300 0.000
048 J010300 0
048 J020300 0.000
048 K010300 0
048 K020300 0.000
049 000300 N
050 000300 N
051 000300 N
052 000300 N
053 A000300 Y
053 B000300 Y
053 C000300 N
055 A000300 N
055 B000300 N
056 000300 Y
057 000300 N
058 A000300 N
059 000300 Y
060 A000300 N
060 B000300 N
061 000300 1000000
062 A000300 Y
062 B000300 0.0
062 C000300 0.0
<PAGE> PAGE 17
062 D000300 0.0
062 E000300 0.0
062 F000300 0.0
062 G000300 0.0
062 H000300 0.0
062 I000300 0.0
062 J000300 0.0
062 K000300 0.0
062 L000300 0.0
062 M000300 8.9
062 N000300 0.0
062 O000300 0.0
062 P000300 2.5
062 Q000300 82.4
062 R000300 0.0
063 A000300 0
063 B000300 21.9
064 A000300 N
064 B000300 N
066 A000300 N
067 000300 N
068 A000300 N
068 B000300 Y
069 000300 N
070 A010300 Y
070 A020300 Y
070 B010300 Y
070 B020300 N
070 C010300 Y
070 C020300 N
070 D010300 Y
070 D020300 N
070 E010300 Y
070 E020300 N
070 F010300 Y
070 F020300 N
070 G010300 Y
070 G020300 N
070 H010300 Y
070 H020300 N
070 I010300 N
070 I020300 N
070 J010300 Y
070 J020300 Y
070 K010300 Y
070 K020300 N
070 L010300 Y
070 L020300 Y
070 M010300 Y
070 M020300 Y
070 N010300 Y
<PAGE> PAGE 18
070 N020300 N
070 O010300 Y
070 O020300 N
070 P010300 Y
070 P020300 N
070 Q010300 N
070 Q020300 N
070 R010300 N
070 R020300 N
071 A000300 33619
071 B000300 27459
071 C000300 10560
071 D000300 260
072 A000300 6
072 B000300 544
072 C000300 0
072 D000300 0
072 E000300 0
072 F000300 42
072 G000300 0
072 H000300 0
072 I000300 1
072 J000300 89
072 K000300 0
072 L000300 8
072 M000300 2
072 N000300 8
072 O000300 0
072 P000300 0
072 Q000300 0
072 R000300 26
072 S000300 2
072 T000300 0
072 U000300 6
072 V000300 0
072 W000300 1
072 X000300 185
072 Y000300 140
072 Z000300 499
072AA000300 1077
072BB000300 107
072CC010300 207
072CC020300 0
072DD010300 85
072DD020300 0
072EE000300 219
073 A010300 0.0800
073 A020300 0.0000
073 B000300 0.1900
073 C000300 0.0000
074 A000300 2119
<PAGE> PAGE 19
074 B000300 0
074 C000300 0
074 D000300 12931
074 E000300 0
074 F000300 0
074 G000300 0
074 H000300 0
074 I000300 0
074 J000300 2088
074 K000300 98
074 L000300 238
074 M000300 53
074 N000300 17526
074 O000300 3658
074 P000300 0
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 87
074 S000300 0
074 T000300 13781
074 U010300 1162
074 U020300 0
074 V010300 11.86
074 V020300 0.00
074 W000300 0.0000
074 X000300 8
074 Y000300 0
075 A000300 0
075 B000300 11882
076 000300 0.00
SIGNATURE ALAN MANDEL
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information
extracted from The Salomon Brothers Institutional Series
Inc form N-SAR for the period ended August 31, 1997 and
is qualified in its entirety by reference to such financial
statements.
</LEGEND>
<SERIES>
<NUMBER> 01
<NAME> Institutional High Yield Bond Fund
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-28-1997
<PERIOD-END> AUG-31-1997
<INVESTMENTS-AT-COST> 4,242,931
<INVESTMENTS-AT-VALUE> 4,411,938
<RECEIVABLES> 179,225
<ASSETS-OTHER> 67,561
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,658,724
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 48,982
<TOTAL-LIABILITIES> 48,982
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 3,942,820
<SHARES-COMMON-STOCK> 406,126
<SHARES-COMMON-PRIOR> 590,907
<ACCUMULATED-NII-CURRENT> 313,097
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 184,818
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 169,007
<NET-ASSETS> 4,609,742
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 331,161
<OTHER-INCOME> 0
<EXPENSES-NET> 18,062
<NET-INVESTMENT-INCOME> 313,099
<REALIZED-GAINS-CURRENT> 184,818
<APPREC-INCREASE-CURRENT> (64,327)
<NET-CHANGE-FROM-OPS> 433,590
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 126,300
<DISTRIBUTIONS-OF-GAINS> 170,305
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 211,893
<SHARES-REINVESTED> 27,112
<NET-CHANGE-IN-ASSETS> (1,965,043)
<ACCUMULATED-NII-PRIOR> 126,298
<ACCUMULATED-GAINS-PRIOR> 170,305
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 16,420
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 130,547
<AVERAGE-NET-ASSETS> 6,514,582
<PER-SHARE-NAV-BEGIN> 11.13
<PER-SHARE-NII> 0.77
<PER-SHARE-GAIN-APPREC> (0.05)
<PER-SHARE-DIVIDEND> (0.21)
<PER-SHARE-DISTRIBUTIONS> (0.29)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 11.35
<EXPENSE-RATIO> 0.55
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.00
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information
extracted from The Salomon Brothers Institutional Series
Inc form N-SAR for the period ended August 31, 1997 and
qualified in its entirety by reference to such financial
statements.
</LEGEND>
<SERIES>
<NUMBER> 02
<NAME> Institutional Asia Growth Fund
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-28-1997
<PERIOD-END> AUG-31-1997
<INVESTMENTS-AT-COST> 5,153,764
<INVESTMENTS-AT-VALUE> 4,644,378
<RECEIVABLES> 490,014
<ASSETS-OTHER> 80,640
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5,215,032
<PAYABLE-FOR-SECURITIES> 247,693
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 72,578
<TOTAL-LIABILITIES> 320,271
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,611,163
<SHARES-COMMON-STOCK> 464,050
<SHARES-COMMON-PRIOR> 454,720
<ACCUMULATED-NII-CURRENT> 2,902
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 791,853
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (511,157)
<NET-ASSETS> 4,894,761
<DIVIDEND-INCOME> 43,620
<INTEREST-INCOME> 1,856
<OTHER-INCOME> 0
<EXPENSES-NET> 26,041
<NET-INVESTMENT-INCOME> 19,435
<REALIZED-GAINS-CURRENT> 812,529
<APPREC-INCREASE-CURRENT> (786,062)
<NET-CHANGE-FROM-OPS> 45,902
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 32,026
<DISTRIBUTIONS-OF-GAINS> 161,057
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 7,848
<SHARES-REINVESTED> 17,178
<NET-CHANGE-IN-ASSETS> 47,333
<ACCUMULATED-NII-PRIOR> 15,493
<ACCUMULATED-GAINS-PRIOR> 140,381
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 19,531
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 173,428
<AVERAGE-NET-ASSETS> 5,165,853
<PER-SHARE-NAV-BEGIN> 10.87
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 0.06
<PER-SHARE-DIVIDEND> (0.07)
<PER-SHARE-DISTRIBUTIONS> (0.35)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 10.55
<EXPENSE-RATIO> 1.00
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.00
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information
extracted from The Salomon Brothers Institutional Series
Funds Inc form N-SAR for the period ended August 31,
1997 and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<SERIES>
<NUMBER> 03
<NAME> Institutional Emerging Markets Debt Fund
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-28-1997
<PERIOD-END> AUG-31-1997
<INVESTMENTS-AT-COST> 12,462,873
<INVESTMENTS-AT-VALUE> 12,931,363
<RECEIVABLES> 2,423,434
<ASSETS-OTHER> 2,171,602
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 17,526,399
<PAYABLE-FOR-SECURITIES> 3,657,656
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 87,535
<TOTAL-LIABILITIES> 3,745,191
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 11,861,967
<SHARES-COMMON-STOCK> 1,162,402
<SHARES-COMMON-PRIOR> 569,293
<ACCUMULATED-NII-CURRENT> 498,927
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 961,612
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 458,702
<NET-ASSETS> 13,781,208
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 543,849
<OTHER-INCOME> 0
<EXPENSES-NET> 44,925
<NET-INVESTMENT-INCOME> 498,924
<REALIZED-GAINS-CURRENT> 969,664
<APPREC-INCREASE-CURRENT> 206,999
<NET-CHANGE-FROM-OPS> 1,675,587
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (85,212)
<DISTRIBUTIONS-OF-GAINS> (218,931)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 575,264
<NUMBER-OF-SHARES-REDEEMED> 5,300
<SHARES-REINVESTED> 23,145
<NET-CHANGE-IN-ASSETS> 6,199,141
<ACCUMULATED-NII-PRIOR> 85,215
<ACCUMULATED-GAINS-PRIOR> 210,879
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 41,930
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 184,907
<AVERAGE-NET-ASSETS> 11,882,375
<PER-SHARE-NAV-BEGIN> 10.91
<PER-SHARE-NII> 0.35
<PER-SHARE-GAIN-APPREC> 0.87
<PER-SHARE-DIVIDEND> (0.08)
<PER-SHARE-DISTRIBUTIONS> (0.19)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 11.86
<EXPENSE-RATIO> 0.75
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0.00
</TABLE>
