<PAGE> PAGE 1
000 A000000 04/30/98
000 C000000 0001002141
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 WARBURG, PINCUS JAPAN GROWTH FUND, INC.
001 B000000 811-07371
001 C000000 3027912919
002 A000000 400 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
007 C010200 2
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 A000001 WARBURG PINCUS ASSET MANAGEMENT, INC.
008 B000001 A
008 C000001 801-28496
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10017
008 D040001 3147
010 A000001 PFPC INC.
010 B000001 85-1196
010 C010001 WILMINGTON
010 C020001 DE
010 C030001 19809
010 A000002 COUNSELLORS FUNDS SERVICE, INC.
010 B000002 801-00000
010 C010002 NEW YORK
010 C020002 NY
010 C030002 10017
010 C040002 3147
012 A000001 BOSTON FINANCIAL DATA SERVICES
<PAGE> PAGE 2
012 B000001 84-00896
012 C010001 NORTH QUINCY
012 C020001 MA
012 C030001 02171
013 A000001 COOPERS & LYBRAND L.L.P.
013 B010001 PHILADELPHIA
013 B020001 PA
013 B030001 19103
015 A000001 STATE STREET BANK & TRUST CO.
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02110
015 E040001 X
015 A000002 PNC BANK, NA
015 B000002 C
015 C010002 PHILADELPHIA
015 C020002 PA
015 C030002 19103
015 E010002 X
018 000000 Y
019 A000000 Y
019 B000000 36
019 C000000 WARBURG PI
020 A000001 FLEMING, ROBERT & CO.
020 B000001 13-3298866
020 C000001 20
020 A000002 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
020 B000002 13-5674085
020 C000002 17
020 A000003 MORGAN STANLEY & CO., INC.
020 B000003 13-2655998
020 C000003 14
020 A000004 SALOMON BROTHERS INC.
020 B000004 13-3082694
020 C000004 9
020 A000005 WAKO SECURITIES
020 B000005 06-1069845
020 C000005 9
020 A000006 KLEINWORT BENSON (EURO) SECURITIES
020 B000006 13-2647786
020 C000006 7
020 A000007 S.G. WARBURG INC.
020 B000007 13-3340045
020 C000007 6
020 A000008 SCHRODERS WERTHEIM & CO., INC.
020 B000008 13-2697272
020 C000008 6
020 A000009 GOLDMAN, SACHS & CO.
020 B000009 13-5108880
020 C000009 5
<PAGE> PAGE 3
020 A000010 NOMURA SECURITIES
020 B000010 13-2642206
020 C000010 5
021 000000 99
022 A000001 STATE STREET BANK & TRUST CO.
022 B000001 04-1867445
022 C000001 298824
022 D000001 0
022 A000002 GOLDMAN SACHS & CO.
022 B000002 13-5108880
022 C000002 239789
022 D000002 0
022 A000003 S.G WARBURG INC.
022 B000003 13-3340045
022 C000003 983
022 D000003 0
022 A000004 FIDUCIARY TRUST CORP.
022 B000004 13-3151768
022 C000004 0
022 D000004 10
022 C000005 0
022 D000005 0
022 C000006 0
022 D000006 0
022 C000007 0
022 D000007 0
022 C000008 0
022 D000008 0
022 C000009 0
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 539596
023 D000000 10
024 000000 Y
025 A000001 GOLDMAN SACHS & CO.
025 B000001 13-5108880
025 C000001 D
025 D000001 534
025 D000002 0
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
<PAGE> PAGE 4
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
028 A010000 12220
028 A020000 0
028 A030000 0
028 A040000 9996
028 B010000 6140
028 B020000 0
028 B030000 0
028 B040000 5841
028 C010000 15058
028 C020000 0
028 C030000 0
028 C040000 2664
028 D010000 6583
028 D020000 0
028 D030000 0
028 D040000 10794
028 E010000 2850
028 E020000 0
028 E030000 0
028 E040000 5686
028 F010000 6293
028 F020000 0
028 F030000 0
028 F040000 5845
028 G010000 49144
028 G020000 0
028 G030000 0
028 G040000 40826
028 H000000 0
029 000000 N
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
034 000000 N
035 000000 0
036 B000000 0
037 000000 N
038 000000 0
039 000000 N
040 000000 Y
041 000000 Y
042 A000000 0
<PAGE> PAGE 5
042 B000000 0
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 39
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 1.250
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 Y
053 C000000 N
054 A000000 Y
054 B000000 Y
054 C000000 Y
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 Y
054 H000000 N
054 I000000 N
<PAGE> PAGE 6
054 J000000 N
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 N
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 2500
062 A000000 N
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 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 0.0
066 A000000 Y
066 B000000 N
066 C000000 N
066 D000000 Y
066 E000000 N
066 F000000 N
066 G000000 N
067 000000 N
068 A000000 N
068 B000000 Y
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 Y
070 B020000 N
070 C010000 Y
<PAGE> PAGE 7
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 N
070 K010000 Y
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 Y
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 N
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 N
071 A000000 23532
071 B000000 8383
071 C000000 27037
071 D000000 31
072 A000000 6
072 B000000 121
072 C000000 120
072 D000000 0
072 E000000 0
072 F000000 197
072 G000000 35
072 H000000 0
072 I000000 14
072 J000000 9
072 K000000 0
072 L000000 5
072 M000000 4
072 N000000 31
072 O000000 0
072 P000000 2
<PAGE> PAGE 8
072 Q000000 0
072 R000000 6
072 S000000 9
072 T000000 39
072 U000000 2
072 V000000 0
072 W000000 6
072 X000000 359
072 Y000000 83
072 Z000000 -35
072AA000000 152
072BB000000 2771
072CC010000 1191
072CC020000 0
072DD010000 0
072DD020000 0
072EE000000 0
073 A010000 0.0000
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 0
074 B000000 534
074 C000000 0
074 D000000 0
074 E000000 0
074 F000000 33331
074 G000000 0
074 H000000 0
074 I000000 6
074 J000000 0
074 K000000 0
074 L000000 1278
074 M000000 12
074 N000000 35161
074 O000000 0
074 P000000 0
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 92
074 S000000 0
074 T000000 35069
074 U010000 3447
074 U020000 3
074 V010000 10.16
074 V020000 10.31
074 W000000 0.0000
074 X000000 638
074 Y000000 0
<PAGE> PAGE 9
075 A000000 0
075 B000000 31830
076 000000 0.00
077 A000000 N
078 000000 N
080 A000000 VIGILANT INSURANCE COMPANY
080 B000000 N/A
080 C000000 18000
081 A000000 Y
081 B000000 36
082 A000000 N
082 B000000 0
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
SIGNATURE KATHY THREN
TITLE COUNSEL
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001002141
<NAME> WARBURG PINCUS JAPAN GROWTH FUND, INC.
<SERIES>
<NUMBER> 001
<NAME> COMMON CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> OCT-31-1998
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 34239843
<INVESTMENTS-AT-VALUE> 33871042
<RECEIVABLES> 1277707
<ASSETS-OTHER> 12306
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 35161055
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 92395
<TOTAL-LIABILITIES> 92395
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 35250067
<SHARES-COMMON-STOCK> 3450460
<SHARES-COMMON-PRIOR> 2564943
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (853250)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 671843
<NET-ASSETS> 35068660
<DIVIDEND-INCOME> 120224
<INTEREST-INCOME> 121278
<OTHER-INCOME> 0
<EXPENSES-NET> 276255
<NET-INVESTMENT-INCOME> (34753)
<REALIZED-GAINS-CURRENT> 621305
<APPREC-INCREASE-CURRENT> 1190806
<NET-CHANGE-FROM-OPS> 1777358
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 49145365
<NUMBER-OF-SHARES-REDEEMED> (40825706)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 10097017
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (1478062)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 197306
<INTEREST-EXPENSE> 2054
<GROSS-EXPENSE> 358933
<AVERAGE-NET-ASSETS> 31809552
<PER-SHARE-NAV-BEGIN> 9.74
<PER-SHARE-NII> .07
<PER-SHARE-GAIN-APPREC> .35
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.16
<EXPENSE-RATIO> 1.75
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001002141
<NAME> WARBURG PINCUS JAPAN GROWTH FUND, INC.
<SERIES>
<NUMBER> 002
<NAME> ADVISOR CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> OCT-31-1998
<PERIOD-END> APR-30-1998
<INVESTMENTS-AT-COST> 34239843
<INVESTMENTS-AT-VALUE> 33871042
<RECEIVABLES> 1277707
<ASSETS-OTHER> 12306
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 35161055
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 92395
<TOTAL-LIABILITIES> 92395
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 35250067
<SHARES-COMMON-STOCK> 3450460
<SHARES-COMMON-PRIOR> 2564943
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (853250)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 671843
<NET-ASSETS> 35068660
<DIVIDEND-INCOME> 120224
<INTEREST-INCOME> 121278
<OTHER-INCOME> 0
<EXPENSES-NET> 276255
<NET-INVESTMENT-INCOME> (34753)
<REALIZED-GAINS-CURRENT> 621305
<APPREC-INCREASE-CURRENT> 1190806
<NET-CHANGE-FROM-OPS> 1777358
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 49145365
<NUMBER-OF-SHARES-REDEEMED> (40825706)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 10097017
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (1478062)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 197306
<INTEREST-EXPENSE> 2054
<GROSS-EXPENSE> 358933
<AVERAGE-NET-ASSETS> 21062
<PER-SHARE-NAV-BEGIN> 9.89
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> .42
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.31
<EXPENSE-RATIO> 2.00
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
