Matsushita Heat — 23.60 (→ did not advance, 35th place) Men's 100 metres Freestyle: Shunsuke Ito Heat — 51.29 (→ did not advance, 37th place) Men's 200 metres Freestyle: Shunsuke Ito Heat — 1:51.97 (→ did not advance, 23rd place) Men's 400 metres Freestyle: Hisato Yasui Heat — 4:00.19 (→ did not advance, 24th place) Men's 1500 m Freestyle Masato Hirano Heat — 15:19.48 B-Final — 15:17.28 (→ 6th place) Hisato Yasui Heat — 15:43.66 (→ did not advance, 22nd place) Men's 100 m Backstroke Keitaro Konnai Heat — 56.35 B-Final — 55.74 (→ 9th place) Hajime Itoi Heat — 56.22 B-Final — 56.23 (→ 11th place) Men's 200 m Backstroke Hajime Itoi Heat — 2:00.43 Final — 2:00.10 (→ 5th place) Ryuji Horii Heat — 2:02.33 B-Final — 2:01.54 (→ 9th place) Men's 100 m Breaststroke Akira Hayashi Heat — 1:02.63 B-Final — 1:02.75 (→ 12th place) Yoshinobu Miyazaki Heat — 1:03.13 (→ did not advance, 22nd place) Men's 200 m Breaststroke Akira Hayashi Heat — 2:15.37 B-Final — 2:16.69 (→ 16th place) Men's 100 m Butterfly Takashi Yamamoto Heat — 53.95 B-Final — 53.98 (→ 13th place) Yukihiro Matsushita Heat — 54.50 (→ did not advance, 20th place) Men's 200 m Butterfly Takashi Yamamoto Heat — 2:00.87 (→ did not advance, 20th place) Men's 200 m Individual Medley Tatsuya Kinugasa Heat — 2:03.42 B-Final — 2:04.59 (→ 14th place) Jo Yoshimi Heat — 2:04.49 B-Final — 2:05.42 (→ 16th place) Men's 400 m Individual Medley Toshiaki Kurasawa Heat — 4:24.83 B-Final — 4:23.36 (→ 10th place) Tatsuya Kinugasa Heat — 4:26.73 B-Final — 4:24.25 (→ 11th place) Men's 4 × 100 m Medley Relay Keitaro Konnai, Akira Hayashi, Takashi Yamamoto and Shunsuke Ito Heat — 3:41.78 Final — 3:40.51 (→ 5th place) Women's 50 m Freestyle Sumika Minamoto Heat — 25.89 B-Final — 26.05 (→ 12th place) Women's 100 m Freestyle Sumika Minamoto Heat — 57.25 (→ did not advance, 25th place) Women's 200 m Freestyle Suzu Chiba Heat — 2:01.11 B-Final — 2:01.00 (→ 10th place) Naoko Imoto Heat — 2:03.78 (→ did not advance, 20th place) Women's 400 m Freestyle Eri Yamanoi Heat — 4:13.40 Final — 4:11.68 (→ 7th place) Suzu Chiba Heat — 4:16.07 B-Final — 4:16.60 (→ 13th place) Women's 800 m Freestyle Eri Yamanoi Heat — 8:40.47 (→ did not advance, 10th place) Aiko Miyake Heat — 8:55.77 (→ did not advance,