Japan in Swimming |
  
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Athlete |
Event |
Heat |
Res. |
Pos. |
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| Reona Aoki | 100 m breaststroke W | Round 1 | 1.07,29 | 4 | |||
| Kosuke Hagino | 200 m medley M | Final | 1.57,49 | 6 | |||
| Semifinal | 1.57,47 | 3 | q | ||||
| Round 1 | 1.57,39 | 4 | q | ||||
| 4x200 m freestyle M | Round 1 | 7.09,53 | 6 | ||||
| Suzuka Hasegawa | 200 m butterfly W | Semifinal | 2.09,42 | 5 | |||
| Round 1 | 2.10,43 | 5 | q | ||||
| Tomoru Honda | 200 m butterfly M | Final | 1.53,73 |  |
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| Semifinal | 1.55,31 | 3 | q | ||||
| Round 1 | 1.55,10 | 3 | q | ||||
| Chihiro Igarashi | 4x100 m freestyle W | Round 1 | 3.36,20 | 5 | |||
| 4x100 m medley W | Final | 3.58,12 | 8 | ||||
| Round 1 | 3.57,17 | 3 | q | ||||
| 4x200 m freestyle W | Round 1 | 7.59,39 | 5 | ||||
| Yuki Ikari | 400 m medley M | Round 1 | 4.12,08 | 5 | |||
| Rikako Ikee | 4x100 m freestyle W | Round 1 | 3.36,20 | 5 | |||
| 4x100 m medley W | Final | 3.58,12 | 8 | ||||
| Round 1 | 3.57,17 | 3 | q | ||||
| 4x100 m medley Mixed W | Round 1 | 3.44,15 | 6 | ||||
| Nagisa Ikemoto | 4x200 m freestyle W | Round 1 | 7.59,39 | 5 | |||
| Ryosuke Irie | 100 m backstroke M | Semifinal | 53,21 | 5 | |||
| Round 1 | 52,99 | 4 | q | ||||
| 200 m backstroke M | Final | 1.57,32 | 7 | ||||
| Semifinal | 1.56,69 | 4 | q | ||||
| Round 1 | 1.56,97 | 4 | q | ||||
| 4x100 m medley M | Final | 3.29,91 | 6 | ||||
| Round 1 | 3.32,02 | 3 | q | ||||
| Takeshi Kawamoto | 100 m butterfly M | Round 1 | 51,93 | 6 | |||
| Yumi Kida | Marathon 10 km W | Final | 2.01.40,9 | 13 | |||
| Waka Kobori | 400 m freestyle W | Round 1 | 4.05,57 | 7 | |||
| 800 m freestyle W | Round 1 | 8.28,90 | 3 | ||||
| Anna Konishi | 100 m backstroke W | Semifinal | 1.00,07 | 7 | |||
| Round 1 | 1.00,04 | 6 | q | ||||
| 4x100 m medley W | Final | 3.58,12 | 8 | ||||
| Round 1 | 3.57,17 | 3 | q | ||||
| 4x100 m medley Mixed W | Round 1 | 3.44,15 | 6 | ||||
| Aoi Masuda | 4x200 m freestyle W | Round 1 | 7.59,39 | 5 | |||
| Katsuhiro Matsumoto | 200 m freestyle M | Round 1 | 1.46,69 | 5 | |||
| 4x100 m medley Mixed M | Round 1 | 3.44,15 | 6 | ||||
| 4x200 m freestyle M | Round 1 | 7.09,53 | 6 | ||||
| Taishin Minamide | Marathon 10 km M | Final | 1.53.07,5 | 13 | |||
| Naoki Mizunuma | 100 m butterfly M | Semifinal | 51,46 | 6 | |||
| Round 1 | 51,57 | 4 | q | ||||
| 4x100 m medley M | Final | 3.29,91 | 6 | ||||
| Round 1 | 3.32,02 | 3 | q | ||||
| Ryuya Mura | 100 m breaststroke M | Semifinal | 59,82 | 7 | |||
| Round 1 | 59,40 | 4 | q | ||||
| 200 m breaststroke M | Final | 2.08,42 | 7 | ||||
| Semifinal | 2.08,27 | 3 | q | ||||
| Round 1 | 2.09,00 | 3 | q | ||||
| 4x100 m medley M | Final | 3.29,91 | 6 | ||||
| Round 1 | 3.32,02 | 3 | q | ||||
| Katsumi Nakamura | 100 m freestyle M | Round 1 | 48.48 | 6 | |||
| 4x100 m freestyle M | Round 1 | 3.14,44 | 7 | ||||
| 4x100 m medley M | Final | 3.29,91 | 6 | ||||
| Round 1 | 3.32,02 | 3 | q | ||||
| Akira Namba | 4x100 m freestyle M | Round 1 | 3.14,44 | 7 | |||
| Miyu Namba | 400 m freestyle W | Round 1 | 4.13,49 | 8 | |||
| 800 m freestyle W | Round 1 | 8.32,04 | 4 | ||||
| Yui Ohashi | 200 m medley W | Final | 2.08,52 |  |
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| Semifinal | 2.09,79 | 3 | q | ||||
| Round 1 | 2.10,77 | 3 | q | ||||
| 400 m medley W | Final | 4.32,08 | |
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| Round 1 | 4.35,71 | 1 | q | ||||
| Rika Omoto | 4x100 m freestyle W | Round 1 | 3.36,20 | 5 | |||
| Natsumi Sakai | 4x100 m freestyle W | Round 1 | 3.36,20 | 5 | |||
| Shoma Sato | 100 m breaststroke M | Round 1 | 1.00,04 | 8 | |||
| 200 m breaststroke M | Semifinal | 2.09,04 | 6 | ||||
| Round 1 | 2.09,43 | 2 | q | ||||
| 4x100 m medley Mixed M | Round 1 | 3.44,15 | 6 | ||||
| Kaiya Seki | 4x100 m freestyle M | Round 1 | 3.14,44 | 7 | |||
| Daiya Seto | 200 m butterfly M | Semifinal | 1.55,50 | 7 | |||
| Round 1 | 1.55,26 | 4 | q | ||||
| 200 m medley M | Final | 1.56,22 | 4 | ||||
| Semifinal | 1.56,86 | 2 | q | ||||
| Round 1 | 1.58,15 | 5 | q | ||||
| 400 m medley M | Round 1 | 4.10,52 | 5 | ||||
| Shinri Shioura | 4x100 m freestyle M | Round 1 | 3.14,44 | 7 | |||
| Rio Shirai | 4x200 m freestyle W | Round 1 | 7.59,39 | 5 | |||
| Keita Sunama | 200 m backstroke M | Semifinal | 1.57,16 | 7 | |||
| Round 1 | 1.57,07 | 3 | q | ||||
| Kotaro Takahashi | 4x200 m freestyle M | Round 1 | 7.09,53 | 6 | |||
| Ageha Tanigawa | 400 m medley W | Round 1 | 4.41,76 | 7 | |||
| Miho Teramura | 200 m medley W | Semifinal | 2.12,14 | 7 | |||
| Round 1 | 2.11,22 | 4 | q | ||||
| Kanako Watanabe | 100 m breaststroke W | Round 1 | 1.07,01 | 3 | |||
| 200 m breaststroke W | Round 1 | 2.24,73 | 4 | ||||
| 4x100 m medley W | Final | 3.58,12 | 8 | ||||
| Round 1 | 3.57,17 | 3 | q | ||||
| Konosuke Yanagimoto | 4x200 m freestyle M | Round 1 | 7.09,53 | 6 | |||
| * The list of Japanese olympians in Swimming at the Tokyo 2020 Olympics is not yet completed. All possible medalists are already included. | |||||||
| These facts about Japan in Swimming at the Olympic Games in Tokyo 2020 is based on the official olympic reports and Olympian Database | |||||||
