Subject Analysis
Japan
Career
1928 – 2025
Best year
1932
Total points
5002
Best results
2× 1. Olympic Games
All-time rank
#3
10-year rank
#9
Ranking Development
Points distribution
Disciplines
Contests
Categories
| Year | Contest | Discipline | Category | Position | Points | Name |
|---|---|---|---|---|---|---|
| 2025 | Asian Championship | 200m breaststroke | Men | 2 | 4 | Iori Miyazaki |
| 2025 | World Championship | 200m freestyle | Men | 3 | 3 | Tatsuya Murasa |
| 2025 | Asian Championship | 400m individual medley | Men | 3 | 2 | Shun Tanaka |
| 2025 | Asian Championship | 200m freestyle | Men | 3 | 2 | Hinata Ando |
| 2025 | Asian Championship | 200m backstroke | Men | 2 | 4 | Rui Yoshida |
| 2025 | Asian Championship | 200m butterfly | Men | 2 | 4 | Ryo Kuratsuka |
| 2025 | World Championship | 400m individual medley | Men | 2 | 6 | Tomoyuki Matsushita |
| 2025 | World Championship | 200m breaststroke | Men | 2 | 6 | Ippei Watanabe |
| 2024 | World Championship | 200m butterfly | Men | 1 | 10 | Tomoru Honda |
| 2024 | World Championship 25m | 200m breaststroke | Men | 3 | 1 | Yamato Fukasawa |
| 2024 | World Championship | 400m individual medley | Men | 3 | 3 | Daiya Seto |
| 2024 | Olympic Games | 400m individual medley | Men | 2 | 18 | Tomoyuki Matsushita |
| 2023 | World Championship | 200m butterfly | Men | 3 | 3 | Tomoru Honda |
| 2023 | World Championship | 400m individual medley | Men | 3 | 3 | Daiya Seto |
| 2022 | Asian Games | 4x100m freestyle | Men | 3 | 6 | – |
| 2022 | Asian Games | 200m butterfly | Men | 1 | 7 | Tomoru Honda |
| 2022 | World Championship | 100m butterfly | Men | 2 | 6 | Naoki Mizunuma |
| 2022 | World Championship | 200m breaststroke | Men | 2 | 6 | Yu Hanaguruma |
| 2022 | Asian Games | 1500m freestyle | Men | 3 | 2 | Shogo Takeda |
| 2022 | World Championship | 200m butterfly | Men | 3 | 3 | Tomoru Honda |
| 2022 | World Championship 25m | 200m butterfly | Men | 2 | 2 | Daiya Seto |
| 2022 | World Championship | 200m individual medley | Men | 3 | 3 | Daiya Seto |
| 2022 | Asian Games | 4x200m freestyle | Men | 3 | 6 | – |
| 2022 | Asian Games | 400m individual medley | Men | 1 | 7 | Tomoru Honda |
| 2022 | Asian Games | 50m backstroke | Men | 3 | 2 | Ryosuke Irie |
| 2022 | Asian Games | 4x100m medley | Men | 3 | 6 | – |
| 2022 | Asian Games | 400m individual medley | Men | 2 | 4 | Daiya Seto |
| 2022 | World Championship 25m | 400m individual medley | Men | 1 | 4 | Daiya Seto |
| 2022 | Asian Games | 100m butterfly | Men | 1 | 7 | Katsuhiro Matsumoto |
| 2022 | Asian Games | 200m individual medley | Men | 3 | 2 | Daiya Seto |
| 2022 | Asian Games | 100m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2022 | World Championship 25m | 200m breaststroke | Men | 1 | 4 | Daiya Seto |
| 2022 | Asian Games | 200m breaststroke | Men | 3 | 2 | Ippei Watanabe |
| 2022 | Asian Games | 200m backstroke | Men | 3 | 2 | Hidekazu Takehara |
| 2021 | World Championship 25m | 200m individual medley | Men | 1 | 4 | Daiya Seto |
| 2021 | World Championship 25m | 400m individual medley | Men | 1 | 4 | Daiya Seto |
| 2020 | Olympic Games | 200m butterfly | Men | 2 | 18 | Tomoru Honda |
| 2019 | World Championship | 200m butterfly | Men | 2 | 6 | Daiya Seto |
| 2019 | World Championship | 200m individual medley | Men | 1 | 10 | Daiya Seto |
| 2019 | World Championship | 400m individual medley | Men | 1 | 10 | Daiya Seto |
| 2019 | World Championship | 200m breaststroke | Men | 3 | 3 | Ippei Watanabe |
| 2019 | World Championship | 200m freestyle | Men | 2 | 6 | Katsuhiro Matsumoto |
| 2018 | Asian Games | 4x100m freestyle | Men | 1 | 21 | – |
| 2018 | Asian Games | 200m individual medley | Men | 2 | 4 | Kosuke Hagino |
| 2018 | World Championship 25m | 200m butterfly | Men | 1 | 4 | Daiya Seto |
| 2018 | Asian Games | 200m breaststroke | Men | 1 | 7 | Yasuhiro Koseki |
| 2018 | World Championship 25m | 400m individual medley | Men | 1 | 4 | Daiya Seto |
| 2018 | Asian Games | 50m freestyle | Men | 2 | 4 | Katsumi Nakamura |
| 2018 | World Championship 25m | 200m individual medley | Men | 3 | 1 | Hiromasa Fujimori |
| 2018 | Asian Games | 200m backstroke | Men | 3 | 2 | Keita Sunama |
| 2018 | Pan Pacific Championship | 200m breaststroke | Men | 1 | 7 | Ippei Watanabe |
| 2018 | Pan Pacific Championship | 200m butterfly | Men | 1 | 7 | Daiya Seto |
| 2018 | Asian Games | 200m butterfly | Men | 1 | 7 | Daiya Seto |
| 2018 | Asian Games | 100m butterfly | Men | 3 | 2 | Yuki Kobori |
| 2018 | Pan Pacific Championship | 200m individual medley | Men | 3 | 2 | Kosuke Hagino |
| 2018 | Asian Games | 800m freestyle | Men | 2 | 4 | Shogo Takeda |
| 2018 | Asian Games | 400m individual medley | Men | 1 | 7 | Daiya Seto |
| 2018 | Asian Games | 200m freestyle | Men | 2 | 4 | Katsuhiro Matsumoto |
| 2018 | Asian Games | 50m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2018 | Asian Games | 100m freestyle | Men | 1 | 7 | Shinri Shioura |
| 2018 | Pan Pacific Championship | 400m individual medley | Men | 2 | 4 | Kosuke Hagino |
| 2018 | Asian Games | 4x100m medley | Men | 2 | 12 | – |
| 2018 | Asian Games | 400m freestyle | Men | 2 | 4 | Naito Ehara |
| 2018 | Asian Games | 100m freestyle | Men | 2 | 4 | Katsumi Nakamura |
| 2018 | World Championship 25m | 100m breaststroke | Men | 3 | 1 | Yasuhiro Koseki |
| 2018 | Pan Pacific Championship | 4x100m medley | Men | 2 | 12 | – |
| 2018 | Asian Games | 400m individual medley | Men | 2 | 4 | Kosuke Hagino |
| 2018 | Asian Games | 200m butterfly | Men | 2 | 4 | Nao Horomura |
| 2018 | World Championship 25m | 4x100m medley | Men | 3 | 3 | – |
| 2018 | Pan Pacific Championship | 4x100m freestyle | Men | 3 | 6 | – |
| 2018 | Asian Games | 50m freestyle | Men | 3 | 2 | Shunichi Nakao |
| 2018 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 2018 | Pan Pacific Championship | 200m freestyle | Men | 3 | 2 | Katsuhiro Matsumoto |
| 2018 | Asian Games | 200m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2018 | Pan Pacific Championship | 200m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2018 | Asian Games | 400m freestyle | Men | 3 | 2 | Kosuke Hagino |
| 2018 | Pan Pacific Championship | 4x200m freestyle | Men | 3 | 6 | – |
| 2018 | Pan Pacific Championship | 100m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2018 | Asian Games | 100m breaststroke | Men | 1 | 7 | Yasuhiro Koseki |
| 2018 | Pan Pacific Championship | 100m breaststroke | Men | 1 | 7 | Yasuhiro Koseki |
| 2018 | Asian Games | 100m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2018 | Asian Games | 50m breaststroke | Men | 1 | 7 | Yasuhiro Koseki |
| 2018 | Asian Games | 200m breaststroke | Men | 2 | 4 | Ippei Watanabe |
| 2018 | Pan Pacific Championship | 400m individual medley | Men | 3 | 2 | Daiya Seto |
| 2017 | World Championship | 400m individual medley | Men | 3 | 3 | Daiya Seto |
| 2017 | World Championship | 200m breaststroke | Men | 2 | 6 | Yasuhiro Koseki |
| 2017 | World Championship | 200m butterfly | Men | 3 | 3 | Daiya Seto |
| 2017 | World Championship | 200m individual medley | Men | 2 | 6 | Kosuke Hagino |
| 2017 | World Championship | 200m breaststroke | Men | 3 | 3 | Ippei Watanabe |
| 2017 | World Championship | 50m backstroke | Men | 2 | 6 | Junya Koga |
| 2016 | Olympic Games | 4x200m freestyle | Men | 3 | 18 | – |
| 2016 | World Championship 25m | 100m individual medley | Men | 2 | 2 | Daiya Seto |
| 2016 | Asian Championship | 4x100m medley | Men | 2 | 12 | – |
| 2016 | Asian Championship | 200m breaststroke | Men | 1 | 7 | Ippei Watanabe |
| 2016 | Asian Championship | 200m butterfly | Men | 2 | 4 | Daiya Seto |
| 2016 | Asian Championship | 50m backstroke | Men | 2 | 4 | Shunichi Nakao |
| 2016 | Asian Championship | 50m butterfly | Men | 3 | 2 | Takeshi Kawamoto |
| 2016 | Asian Championship | 200m individual medley | Men | 2 | 4 | Daiya Seto |
| 2016 | Olympic Games | 400m individual medley | Men | 3 | 6 | Daiya Seto |
| 2016 | Asian Championship | 100m freestyle | Men | 2 | 4 | Katsumi Nakamura |
| 2016 | World Championship 25m | 4x50m freestyle | Men | 3 | 3 | – |
| 2016 | Asian Championship | 50m breaststroke | Men | 2 | 4 | Koichiro Okazaki |
| 2016 | Asian Championship | 50m freestyle | Men | 3 | 2 | Shunichi Nakao |
| 2016 | Asian Championship | 200m individual medley | Men | 3 | 2 | Keita Sunama |
| 2016 | Asian Championship | 1500m freestyle | Men | 3 | 2 | Shogo Takeda |
| 2016 | World Championship 25m | 100m freestyle | Men | 2 | 2 | Shinri Shioura |
| 2016 | Asian Championship | 100m breaststroke | Men | 2 | 4 | Yasuhiro Koseki |
| 2016 | World Championship 25m | 400m individual medley | Men | 1 | 4 | Daiya Seto |
| 2016 | World Championship 25m | 4x200m freestyle | Men | 3 | 3 | – |
| 2016 | World Championship 25m | 200m backstroke | Men | 3 | 1 | Masaki Kaneko |
| 2016 | Asian Championship | 100m backstroke | Men | 3 | 2 | Takeshi Kawamoto |
| 2016 | World Championship 25m | 200m individual medley | Men | 3 | 1 | Daiya Seto |
| 2016 | Asian Championship | 100m butterfly | Men | 2 | 4 | Takeshi Kawamoto |
| 2016 | Asian Championship | 400m individual medley | Men | 1 | 7 | Daiya Seto |
| 2016 | Olympic Games | 200m individual medley | Men | 2 | 18 | Kosuke Hagino |
| 2016 | Asian Championship | 200m butterfly | Men | 1 | 7 | Masato Sakai |
| 2016 | Asian Championship | 50m butterfly | Men | 1 | 7 | Masayuki Kishida |
| 2016 | World Championship 25m | 100m individual medley | Men | 3 | 1 | Shinri Shioura |
| 2016 | Olympic Games | 200m butterfly | Men | 2 | 18 | Masato Sakai |
| 2016 | Asian Championship | 4x200m freestyle | Men | 1 | 21 | – |
| 2016 | Asian Championship | 50m breaststroke | Men | 1 | 7 | Yasuhiro Koseki |
| 2016 | Asian Championship | 50m freestyle | Men | 1 | 7 | Katsumi Nakamura |
| 2016 | Asian Championship | 100m butterfly | Men | 2 | 4 | Masato Sakai |
| 2016 | World Championship 25m | 50m backstroke | Men | 1 | 4 | Junya Koga |
| 2016 | Asian Championship | 4x100m freestyle | Men | 2 | 12 | – |
| 2016 | Asian Championship | 200m backstroke | Men | 3 | 2 | Keita Sunama |
| 2016 | World Championship 25m | 200m butterfly | Men | 3 | 1 | Daiya Seto |
| 2016 | Asian Championship | 200m freestyle | Men | 3 | 2 | Katsuhiro Matsumoto |
| 2016 | Asian Championship | 100m breaststroke | Men | 1 | 7 | Ippei Watanabe |
| 2016 | Olympic Games | 400m individual medley | Men | 1 | 30 | Kosuke Hagino |
| 2016 | Asian Championship | 400m freestyle | Men | 2 | 4 | Tsubasa Amai |
| 2016 | World Championship 25m | 4x100m medley | Men | 3 | 3 | – |
| 2015 | World Championship | 400m individual medley | Men | 1 | 10 | Daiya Seto |
| 2014 | Asian Games | 50m freestyle | Men | 3 | 2 | Kenta Ito |
| 2014 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 2014 | Asian Games | 200m backstroke | Men | 1 | 7 | Ryosuke Irie |
| 2014 | Pan Pacific Championship | 200m freestyle | Men | 2 | 4 | Kosuke Hagino |
| 2014 | Asian Games | 100m breaststroke | Men | 2 | 4 | Yasuhiro Koseki |
| 2014 | Pan Pacific Championship | 400m freestyle | Men | 2 | 4 | Kosuke Hagino |
| 2014 | Pan Pacific Championship | 200m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2014 | Asian Games | 50m breaststroke | Men | 2 | 4 | Yasuhiro Koseki |
| 2014 | World Championship 25m | 100m backstroke | Men | 3 | 1 | Ryosuke Irie |
| 2014 | Pan Pacific Championship | 4x200m freestyle | Men | 2 | 12 | – |
| 2014 | Pan Pacific Championship | 100m breaststroke | Men | 1 | 7 | Yasuhiro Koseki |
| 2014 | Asian Games | 200m breaststroke | Men | 2 | 4 | Kazuki Kohinata |
| 2014 | Asian Games | 200m breaststroke | Men | 3 | 2 | Yasuhiro Koseki |
| 2014 | World Championship 25m | 400m individual medley | Men | 2 | 2 | Kosuke Hagino |
| 2014 | Asian Games | 200m individual medley | Men | 2 | 4 | Hiromasa Fujimori |
| 2014 | Asian Games | 4x100m freestyle | Men | 2 | 12 | – |
| 2014 | Asian Games | 100m backstroke | Men | 1 | 7 | Ryosuke Irie |
| 2014 | Asian Games | 50m backstroke | Men | 1 | 7 | Junya Koga |
| 2014 | Asian Games | 50m freestyle | Men | 2 | 4 | Shinri Shioura |
| 2014 | World Championship 25m | 200m butterfly | Men | 2 | 2 | Daiya Seto |
| 2014 | Pan Pacific Championship | 200m individual medley | Men | 1 | 7 | Kosuke Hagino |
| 2014 | Asian Games | 200m backstroke | Men | 3 | 2 | Kosuke Hagino |
| 2014 | World Swimmer of the Year | Awards | Men | 1 | 2 | Kosuke Hagino |
| 2014 | Pan Pacific Championship | 200m breaststroke | Men | 1 | 7 | Yasuhiro Koseki |
| 2014 | Pan Pacific Championship | 200m butterfly | Men | 1 | 7 | Daiya Seto |
| 2014 | Asian Games | 200m butterfly | Men | 1 | 7 | Daiya Seto |
| 2014 | World Championship 25m | 200m individual medley | Men | 1 | 4 | Kosuke Hagino |
| 2014 | Asian Games | 100m butterfly | Men | 3 | 2 | Hirofumi Ikebata |
| 2014 | World Championship 25m | 400m individual medley | Men | 1 | 4 | Daiya Seto |
| 2014 | Pan Pacific Championship | 200m individual medley | Men | 3 | 2 | Daiya Seto |
| 2014 | Pan Pacific Championship | 100m butterfly | Men | 3 | 2 | Hirofumi Ikebata |
| 2014 | Pan Pacific Championship | 100m backstroke | Men | 1 | 7 | Ryosuke Irie |
| 2014 | Asian Games | 200m freestyle | Men | 1 | 7 | Kosuke Hagino |
| 2014 | Asian Games | 400m individual medley | Men | 1 | 7 | Kosuke Hagino |
| 2014 | World Championship 25m | 200m individual medley | Men | 3 | 1 | Daiya Seto |
| 2014 | Asian Games | 50m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2014 | Asian Games | 1500m freestyle | Men | 2 | 4 | Kohei Yamamoto |
| 2014 | Pan Pacific Championship | 400m individual medley | Men | 1 | 7 | Kosuke Hagino |
| 2014 | Asian Games | 4x100m medley | Men | 2 | 12 | – |
| 2014 | Asian Games | 400m freestyle | Men | 2 | 4 | Kosuke Hagino |
| 2014 | Asian Games | 200m individual medley | Men | 1 | 7 | Kosuke Hagino |
| 2014 | Asian Games | 100m freestyle | Men | 2 | 4 | Shinri Shioura |
| 2014 | Pan Pacific Championship | 4x100m medley | Men | 2 | 12 | – |
| 2014 | Pan Pacific Championship | 200m breaststroke | Men | 3 | 2 | Kazuki Kohinata |
| 2014 | Asian Games | 100m freestyle | Men | 3 | 2 | Rammaru Harada |
| 2014 | Asian Games | 200m butterfly | Men | 2 | 4 | Kenta Hirai |
| 2014 | Asian Games | 100m backstroke | Men | 3 | 2 | Kosuke Hagino |
| 2014 | Asian Games | 400m individual medley | Men | 3 | 2 | Daiya Seto |
| 2013 | World Championship | 4x100m medley | Men | 3 | 9 | – |
| 2013 | World Championship | 400m individual medley | Men | 1 | 10 | Daiya Seto |
| 2013 | World Championship | 200m individual medley | Men | 2 | 6 | Kosuke Hagino |
| 2013 | World Championship | 400m freestyle | Men | 2 | 6 | Kosuke Hagino |
| 2012 | Asian Championship | 100m backstroke | Men | 2 | 4 | Takeshi Kawamoto |
| 2012 | World Championship 25m | 200m individual medley | Men | 2 | 2 | Daiya Seto |
| 2012 | Asian Championship | 400m freestyle | Men | 3 | 2 | Takumi Komatsu |
| 2012 | Asian Championship | 4x100m freestyle | Men | 2 | 12 | – |
| 2012 | Asian Championship | 200m backstroke | Men | 3 | 2 | Keita Sunama |
| 2012 | Asian Championship | 4x200m freestyle | Men | 2 | 12 | – |
| 2012 | Asian Championship | 200m freestyle | Men | 3 | 2 | Takumi Komatsu |
| 2012 | Asian Championship | 100m breaststroke | Men | 1 | 7 | Kazuki Kohinata |
| 2012 | Asian Championship | 400m individual medley | Men | 2 | 4 | Keita Sunama |
| 2012 | World Championship 25m | 200m butterfly | Men | 1 | 4 | Kazuya Kaneda |
| 2012 | Asian Championship | 4x100m medley | Men | 2 | 12 | – |
| 2012 | Asian Championship | 200m breaststroke | Men | 1 | 7 | Kazuki Kohinata |
| 2012 | Asian Championship | 50m backstroke | Men | 2 | 4 | Takeshi Kawamoto |
| 2012 | Asian Championship | 200m butterfly | Men | 2 | 4 | Masato Sakai |
| 2012 | Asian Championship | 50m butterfly | Men | 3 | 2 | Toru Maruyama |
| 2012 | Olympic Games | 400m individual medley | Men | 3 | 6 | Kosuke Hagino |
| 2012 | Asian Championship | 100m freestyle | Men | 2 | 4 | Toru Maruyama |
| 2012 | Olympic Games | 100m backstroke | Men | 3 | 6 | Ryosuke Irie |
| 2012 | Asian Championship | 200m breaststroke | Men | 2 | 4 | Kazuki Utsunomiya |
| 2012 | Asian Championship | 50m breaststroke | Men | 2 | 4 | Yoshiki Yamanaka |
| 2012 | Asian Championship | 50m freestyle | Men | 3 | 2 | Toru Maruyama |
| 2012 | Asian Championship | 200m individual medley | Men | 3 | 2 | Keita Sunama |
| 2012 | Olympic Games | 200m breaststroke | Men | 3 | 6 | Ryo Tateishi |
| 2012 | Asian Championship | 100m butterfly | Men | 3 | 2 | Takeshi Kawamoto |
| 2012 | Olympic Games | 4x100m medley | Men | 2 | 54 | – |
| 2012 | Asian Championship | 1500m freestyle | Men | 2 | 4 | Shogo Takeda |
| 2012 | Olympic Games | 200m butterfly | Men | 3 | 6 | Takeshi Matsuda |
| 2012 | World Championship 25m | 400m individual medley | Men | 1 | 4 | Daiya Seto |
| 2012 | Olympic Games | 200m backstroke | Men | 2 | 18 | Ryosuke Irie |
| 2011 | World Championship | 200m butterfly | Men | 2 | 6 | Takeshi Matsuda |
| 2011 | World Championship | 400m individual medley | Men | 3 | 3 | Yuya Horihata |
| 2011 | World Championship | 200m backstroke | Men | 2 | 6 | Ryosuke Irie |
| 2011 | World Championship | 200m breaststroke | Men | 2 | 6 | Kosuke Kitajima |
| 2011 | World Championship | 100m backstroke | Men | 3 | 3 | Ryosuke Irie |
| 2010 | Asian Games | 400m individual medley | Men | 1 | 7 | Yuya Horihata |
| 2010 | Asian Games | 50m backstroke | Men | 2 | 4 | Ryosuke Irie |
| 2010 | Asian Games | 200m freestyle | Men | 3 | 2 | Takeshi Matsuda |
| 2010 | Asian Games | 200m individual medley | Men | 1 | 7 | Ken Takakuwa |
| 2010 | Pan Pacific Championship | 4x100m medley | Men | 2 | 12 | – |
| 2010 | Pan Pacific Championship | 100m backstroke | Men | 2 | 4 | Junya Koga |
| 2010 | Asian Games | 100m freestyle | Men | 3 | 2 | Takuro Fujii |
| 2010 | Asian Games | 100m breaststroke | Men | 1 | 7 | Ryo Tateishi |
| 2010 | World Championship 25m | 200m breaststroke | Men | 1 | 4 | Naoya Tomita |
| 2010 | Asian Games | 100m backstroke | Men | 2 | 4 | Junya Koga |
| 2010 | Asian Games | 200m butterfly | Men | 2 | 4 | Ryusuke Sakata |
| 2010 | Asian Games | 400m individual medley | Men | 3 | 2 | Ken Takakuwa |
| 2010 | Asian Games | 50m freestyle | Men | 3 | 2 | Rammaru Harada |
| 2010 | Pan Pacific Championship | 800m freestyle | Men | 3 | 2 | Takeshi Matsuda |
| 2010 | Asian Games | 200m breaststroke | Men | 1 | 7 | Naoya Tomita |
| 2010 | Asian Games | 200m backstroke | Men | 1 | 7 | Ryosuke Irie |
| 2010 | Asian Games | 100m butterfly | Men | 2 | 4 | Takuro Fujii |
| 2010 | Pan Pacific Championship | 200m butterfly | Men | 3 | 2 | Takeshi Matsuda |
| 2010 | Asian Games | 50m breaststroke | Men | 2 | 4 | Ryo Tateishi |
| 2010 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 2010 | Pan Pacific Championship | 200m backstroke | Men | 3 | 2 | Ryosuke Irie |
| 2010 | Pan Pacific Championship | 4x200m freestyle | Men | 2 | 12 | – |
| 2010 | Pan Pacific Championship | 100m breaststroke | Men | 1 | 7 | Kosuke Kitajima |
| 2010 | Asian Games | 4x200m freestyle | Men | 2 | 12 | – |
| 2010 | Asian Games | 50m butterfly | Men | 2 | 4 | Masayuki Kishida |
| 2010 | Pan Pacific Championship | 50m backstroke | Men | 1 | 7 | Junya Koga |
| 2010 | Asian Games | 4x100m freestyle | Men | 2 | 12 | – |
| 2010 | Asian Games | 100m backstroke | Men | 1 | 7 | Ryosuke Irie |
| 2010 | Asian Games | 50m backstroke | Men | 1 | 7 | Junya Koga |
| 2010 | Asian Games | 50m freestyle | Men | 2 | 4 | Masayuki Kishida |
| 2010 | Pan Pacific Championship | 200m breaststroke | Men | 1 | 7 | Kosuke Kitajima |
| 2010 | Asian Games | 200m individual medley | Men | 3 | 2 | Yuya Horihata |
| 2010 | Asian Games | 200m butterfly | Men | 1 | 7 | Takeshi Matsuda |
| 2010 | Pan Pacific Championship | 100m butterfly | Men | 3 | 2 | Takuro Fujii |
| 2009 | Asian Championship | 200m backstroke | Men | 1 | 7 | Takahiro Yamazaki |
| 2009 | World Championship | 100m backstroke | Men | 1 | 10 | Junya Koga |
| 2009 | World Championship | 50m backstroke | Men | 2 | 6 | Junya Koga |
| 2009 | Asian Championship | 100m backstroke | Men | 2 | 4 | Nobuhiro Toyada |
| 2009 | Asian Championship | 200m individual medley | Men | 1 | 7 | Kosuke Hagino |
| 2009 | Asian Championship | 400m freestyle | Men | 3 | 2 | Jumpei Higashi |
| 2009 | Asian Championship | 200m backstroke | Men | 3 | 2 | Nobuhiro Toyada |
| 2009 | Asian Championship | 4x200m freestyle | Men | 2 | 12 | – |
| 2009 | Asian Championship | 1500m freestyle | Men | 3 | 2 | Jumpei Higashi |
| 2009 | Asian Championship | 4x100m medley | Men | 2 | 12 | – |
| 2009 | Asian Championship | 200m breaststroke | Men | 1 | 7 | Akihiro Yamaguchi |
| 2009 | Asian Championship | 50m backstroke | Men | 2 | 4 | Kosuke Hagino |
| 2009 | Asian Championship | 400m individual medley | Men | 3 | 2 | Keita Sameshima |
| 2009 | World Championship | 200m butterfly | Men | 3 | 3 | Takeshi Matsuda |
| 2009 | Asian Championship | 200m breaststroke | Men | 2 | 4 | Yukihiro Takahashi |
| 2009 | Asian Championship | 100m backstroke | Men | 3 | 2 | Takahiro Yamazaki |
| 2009 | World Championship | 200m backstroke | Men | 2 | 6 | Ryosuke Irie |
| 2009 | Asian Championship | 400m individual medley | Men | 1 | 7 | Daiya Seto |
| 2009 | Asian Championship | 50m backstroke | Men | 1 | 7 | Nobuhiro Toyada |
| 2009 | Asian Championship | 100m butterfly | Men | 3 | 2 | Hirofumi Ikebata |
| 2008 | Olympic Games | 200m butterfly | Men | 3 | 6 | Takeshi Matsuda |
| 2008 | Olympic Games | 200m breaststroke | Men | 1 | 30 | Kosuke Kitajima |
| 2008 | Olympic Games | 100m breaststroke | Men | 1 | 30 | Kosuke Kitajima |
| 2008 | Olympic Games | 4x100m medley | Men | 3 | 18 | – |
| 2007 | World Championship | 4x100m medley | Men | 2 | 18 | – |
| 2007 | World Championship | 100m breaststroke | Men | 2 | 6 | Kosuke Kitajima |
| 2007 | World Championship | 200m breaststroke | Men | 1 | 10 | Kosuke Kitajima |
| 2006 | Asian Championship | 400m individual medley | Men | 3 | 2 | Taishi Okude |
| 2006 | Pan Pacific Championship | 100m backstroke | Men | 3 | 2 | Tomomi Morita |
| 2006 | Pan Pacific Championship | 100m breaststroke | Men | 3 | 2 | Kosuke Kitajima |
| 2006 | Asian Championship | 100m breaststroke | Men | 3 | 2 | Koichiro Okazaki |
| 2006 | Asian Games | 400m freestyle | Men | 3 | 2 | Takeshi Matsuda |
| 2006 | Pan Pacific Championship | 100m butterfly | Men | 3 | 2 | Takashi Yamamoto |
| 2006 | Asian Games | 200m butterfly | Men | 3 | 2 | Ryuichi Shibata |
| 2006 | Asian Games | 100m backstroke | Men | 3 | 2 | Masafumi Yamaguchi |
| 2006 | Asian Championship | 100m butterfly | Men | 3 | 2 | Shota Takamoto |
| 2006 | Asian Games | 4x100m freestyle | Men | 1 | 21 | – |
| 2006 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 2006 | Asian Games | 400m individual medley | Men | 1 | 7 | Hidemasa Sano |
| 2006 | Asian Games | 200m freestyle | Men | 3 | 2 | Daisuke Hosokawa |
| 2006 | Asian Games | 100m breaststroke | Men | 2 | 4 | Makoto Yamashita |
| 2006 | Pan Pacific Championship | 1500m freestyle | Men | 3 | 2 | Takeshi Matsuda |
| 2006 | Asian Games | 200m individual medley | Men | 1 | 7 | Hidemasa Sano |
| 2006 | Asian Games | 1500m freestyle | Men | 3 | 2 | Takeshi Matsuda |
| 2006 | Pan Pacific Championship | 4x100m medley | Men | 2 | 12 | – |
| 2006 | Pan Pacific Championship | 200m breaststroke | Men | 2 | 4 | Kosuke Kitajima |
| 2006 | Asian Games | 100m freestyle | Men | 3 | 2 | Daisuke Hosokawa |
| 2006 | Asian Games | 100m breaststroke | Men | 1 | 7 | Kosuke Kitajima |
| 2006 | Asian Championship | 200m butterfly | Men | 3 | 2 | Shota Takamoto |
| 2006 | Asian Games | 200m butterfly | Men | 2 | 4 | Takeshi Matsuda |
| 2006 | Asian Games | 200m breaststroke | Men | 2 | 4 | Daisuke Kimura |
| 2006 | Asian Games | 200m individual medley | Men | 2 | 4 | Ken Takakuwa |
| 2006 | Asian Games | 200m breaststroke | Men | 1 | 7 | Kosuke Kitajima |
| 2006 | Asian Games | 200m backstroke | Men | 1 | 7 | Ryosuke Irie |
| 2006 | Asian Games | 100m butterfly | Men | 2 | 4 | Ryo Takayasu |
| 2006 | Pan Pacific Championship | 200m butterfly | Men | 3 | 2 | Takeshi Matsuda |
| 2006 | Asian Championship | 100m breaststroke | Men | 2 | 4 | Yuta Suenaga |
| 2006 | Asian Games | 50m breaststroke | Men | 2 | 4 | Kosuke Kitajima |
| 2006 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 2006 | Asian Championship | 400m freestyle | Men | 3 | 2 | Taishi Okude |
| 2006 | Pan Pacific Championship | 200m backstroke | Men | 3 | 2 | Tomomi Morita |
| 2006 | Pan Pacific Championship | 200m butterfly | Men | 2 | 4 | Ryuichi Shibata |
| 2006 | Pan Pacific Championship | 100m butterfly | Men | 2 | 4 | Ryo Takayasu |
| 2006 | Asian Games | 200m backstroke | Men | 3 | 2 | Takashi Nakano |
| 2006 | Asian Championship | 200m individual medley | Men | 3 | 2 | Taishi Okude |
| 2006 | Asian Games | 50m butterfly | Men | 2 | 4 | Ryo Takayasu |
| 2006 | Asian Games | 100m butterfly | Men | 1 | 7 | Takashi Yamamoto |
| 2006 | Asian Games | 100m backstroke | Men | 1 | 7 | Junichi Miyashita |
| 2006 | Asian Games | 50m backstroke | Men | 1 | 7 | Junya Koga |
| 2006 | Asian Championship | 200m breaststroke | Men | 3 | 2 | Yuichi Narisawa |
| 2006 | Asian Championship | 50m breaststroke | Men | 3 | 2 | Koichiro Okazaki |
| 2006 | Pan Pacific Championship | 200m individual medley | Men | 3 | 2 | Ken Takakuwa |
| 2006 | Asian Games | 400m individual medley | Men | 2 | 4 | Shinya Taniguchi |
| 2006 | Asian Games | 50m freestyle | Men | 2 | 4 | Makoto Ito |
| 2005 | World Championship | 200m butterfly | Men | 2 | 6 | Takeshi Matsuda |
| 2005 | World Championship | 50m breaststroke | Men | 3 | 3 | Kosuke Kitajima |
| 2005 | World Championship | 4x100m medley | Men | 3 | 9 | – |
| 2005 | World Championship | 100m breaststroke | Men | 2 | 6 | Kosuke Kitajima |
| 2005 | World Championship | 200m breaststroke | Men | 3 | 3 | Genki Imamura |
| 2004 | Olympic Games | 200m butterfly | Men | 2 | 18 | Takashi Yamamoto |
| 2004 | Olympic Games | 4x100m medley | Men | 3 | 18 | – |
| 2004 | Olympic Games | 200m breaststroke | Men | 1 | 30 | Kosuke Kitajima |
| 2004 | Olympic Games | 100m backstroke | Men | 3 | 6 | Tomomi Morita |
| 2004 | Olympic Games | 100m breaststroke | Men | 1 | 30 | Kosuke Kitajima |
| 2003 | World Championship | 4x100m medley | Men | 3 | 9 | – |
| 2003 | World Championship | 200m breaststroke | Men | 1 | 10 | Kosuke Kitajima |
| 2003 | World Championship | 100m breaststroke | Men | 1 | 10 | Kosuke Kitajima |
| 2003 | World Championship | 200m butterfly | Men | 2 | 6 | Takashi Yamamoto |
| 2002 | Asian Games | 200m backstroke | Men | 2 | 4 | Takashi Nakano |
| 2002 | Asian Games | 200m backstroke | Men | 3 | 2 | Naoya Sonoda |
| 2002 | Asian Games | 100m butterfly | Men | 1 | 7 | Takashi Yamamoto |
| 2002 | Pan Pacific Championship | 200m breaststroke | Men | 3 | 2 | Daisuke Kimura |
| 2002 | Asian Games | 100m backstroke | Men | 1 | 7 | Atsushi Nishikori |
| 2002 | Pan Pacific Championship | 200m individual medley | Men | 2 | 4 | Takahiro Mori |
| 2002 | Asian Games | 400m individual medley | Men | 2 | 4 | Takahiro Mori |
| 2002 | Pan Pacific Championship | 400m individual medley | Men | 3 | 2 | Takahiro Mori |
| 2002 | Pan Pacific Championship | 100m backstroke | Men | 3 | 2 | Tomomi Morita |
| 2002 | Asian Games | 200m butterfly | Men | 3 | 2 | Takeshi Matsuda |
| 2002 | Asian Games | 100m backstroke | Men | 3 | 2 | Tomomi Morita |
| 2002 | Asian Games | 400m individual medley | Men | 3 | 2 | Shinya Taniguchi |
| 2002 | Asian Games | 50m freestyle | Men | 3 | 2 | Issei Nakanishi |
| 2002 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 2002 | Asian Games | 400m freestyle | Men | 1 | 7 | Shunichi Fujita |
| 2002 | Asian Games | 200m freestyle | Men | 3 | 2 | Yosuke Ichikawa |
| 2002 | Asian Games | 200m individual medley | Men | 1 | 7 | Takahiro Mori |
| 2002 | Asian Games | 100m freestyle | Men | 3 | 2 | Daisuke Hosokawa |
| 2002 | Asian Games | 100m breaststroke | Men | 1 | 7 | Kosuke Kitajima |
| 2002 | Pan Pacific Championship | 100m breaststroke | Men | 1 | 7 | Kosuke Kitajima |
| 2002 | Asian Games | 200m freestyle | Men | 2 | 4 | Yoshihiro Okumura |
| 2002 | Asian Games | 200m butterfly | Men | 2 | 4 | Takashi Yamamoto |
| 2002 | Asian Games | 200m breaststroke | Men | 2 | 4 | Daisuke Kimura |
| 2002 | Asian Games | 200m individual medley | Men | 2 | 4 | Jiro Miki |
| 2002 | World Championship 25m | 100m breaststroke | Men | 2 | 2 | Kosuke Kitajima |
| 2002 | Asian Games | 4x100m freestyle | Men | 2 | 12 | – |
| 2002 | Asian Games | 200m breaststroke | Men | 1 | 7 | Kosuke Kitajima |
| 2002 | Asian Games | 100m butterfly | Men | 2 | 4 | Kohei Kawamoto |
| 2002 | Pan Pacific Championship | 200m butterfly | Men | 3 | 2 | Takashi Yamamoto |
| 2002 | Asian Games | 100m breaststroke | Men | 3 | 2 | Yoshihisa Yamaguchi |
| 2002 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 2001 | World Championship | 200m breaststroke | Men | 3 | 3 | Kosuke Kitajima |
| 2001 | World Championship | 50m freestyle | Men | 3 | 3 | Tomohiro Yamanoi |
| 1999 | Pan Pacific Championship | 200m butterfly | Men | 2 | 4 | Takashi Yamamoto |
| 1999 | Pan Pacific Championship | 100m butterfly | Men | 3 | 2 | Takashi Yamamoto |
| 1999 | Pan Pacific Championship | 4x100m medley | Men | 3 | 6 | – |
| 1999 | World Championship 25m | 200m butterfly | Men | 2 | 2 | Takashi Yamamoto |
| 1998 | Asian Games | 200m freestyle | Men | 1 | 7 | Yosuke Ichikawa |
| 1998 | Asian Games | 400m freestyle | Men | 2 | 4 | Masato Hirano |
| 1998 | Asian Games | 200m individual medley | Men | 2 | 4 | Jo Yoshimi |
| 1998 | Asian Games | 100m freestyle | Men | 2 | 4 | Shusuke Ito |
| 1998 | Asian Games | 200m butterfly | Men | 1 | 7 | Takashi Yamamoto |
| 1998 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1998 | Asian Games | 50m freestyle | Men | 2 | 4 | Tomohiro Yamanoi |
| 1998 | Asian Games | 100m butterfly | Men | 1 | 7 | Takashi Yamamoto |
| 1998 | Asian Games | 200m breaststroke | Men | 3 | 2 | Yoshinobu Miyazaki |
| 1998 | Asian Games | 4x100m freestyle | Men | 1 | 21 | – |
| 1998 | Asian Games | 400m individual medley | Men | 1 | 7 | Takahiro Mori |
| 1998 | Asian Games | 100m breaststroke | Men | 2 | 4 | Akira Hayashi |
| 1998 | Asian Games | 100m freestyle | Men | 1 | 7 | Shusuke Ito |
| 1998 | Asian Games | 50m freestyle | Men | 3 | 2 | Hirosuke Hamano |
| 1998 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1998 | Asian Games | 200m freestyle | Men | 3 | 2 | Shusuke Ito |
| 1998 | Asian Games | 1500m freestyle | Men | 1 | 7 | Masato Hirano |
| 1997 | Pan Pacific Championship | 200m breaststroke | Men | 2 | 4 | Yoshiaki Okita |
| 1995 | Pan Pacific Championship | 4x100m medley | Men | 3 | 6 | – |
| 1995 | Pan Pacific Championship | 200m breaststroke | Men | 1 | 7 | Akira Hayashi |
| 1995 | Pan Pacific Championship | 200m backstroke | Men | 3 | 2 | Ryuji Horii |
| 1994 | Asian Games | 100m breaststroke | Men | 1 | 7 | Akira Hayashi |
| 1994 | Asian Games | 200m freestyle | Men | 2 | 4 | Kazunori Hikida |
| 1994 | Asian Games | 200m butterfly | Men | 2 | 4 | Mitsuharu Takane |
| 1994 | Asian Games | 200m breaststroke | Men | 2 | 4 | Akira Hayashi |
| 1994 | Asian Games | 1500m freestyle | Men | 2 | 4 | Masato Hirano |
| 1994 | Asian Games | 100m freestyle | Men | 1 | 7 | Yukihiro Matsushita |
| 1994 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1994 | Asian Games | 200m individual medley | Men | 3 | 2 | Tatsuya Kinugasa |
| 1994 | Asian Games | 100m butterfly | Men | 2 | 4 | Hajime Itoi |
| 1994 | Asian Games | 200m freestyle | Men | 1 | 7 | Taihei Maeda |
| 1994 | Asian Games | 200m backstroke | Men | 2 | 4 | Hajime Itoi |
| 1994 | Asian Games | 200m backstroke | Men | 3 | 2 | Ryuji Horii |
| 1994 | Asian Games | 400m freestyle | Men | 3 | 2 | Masayuki Fujimoto |
| 1994 | Asian Games | 200m individual medley | Men | 2 | 4 | Takahiro Fujimoto |
| 1994 | Asian Games | 100m backstroke | Men | 1 | 7 | Hajime Itoi |
| 1994 | Asian Games | 100m backstroke | Men | 2 | 4 | Eiji Komine |
| 1994 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1994 | Asian Games | 400m individual medley | Men | 2 | 4 | Tatsuya Kinugasa |
| 1994 | Asian Games | 400m individual medley | Men | 3 | 2 | Takahiro Fujimoto |
| 1994 | Asian Games | 200m butterfly | Men | 3 | 2 | Osamu Mihara |
| 1994 | Asian Games | 4x100m freestyle | Men | 1 | 21 | – |
| 1994 | Asian Games | 100m butterfly | Men | 3 | 2 | Mitsuharu Takane |
| 1993 | Pan Pacific Championship | 200m butterfly | Men | 3 | 2 | Mitsuharu Takane |
| 1993 | Pan Pacific Championship | 200m backstroke | Men | 3 | 2 | Hajime Itoi |
| 1993 | Pan Pacific Championship | 4x100m medley | Men | 3 | 6 | – |
| 1993 | Pan Pacific Championship | 100m backstroke | Men | 3 | 2 | Hajime Itoi |
| 1993 | Pan Pacific Championship | 100m breaststroke | Men | 2 | 4 | Akira Hayashi |
| 1991 | Pan Pacific Championship | 200m breaststroke | Men | 2 | 4 | Hiroshi Fujieda |
| 1991 | Pan Pacific Championship | 100m breaststroke | Men | 3 | 2 | Akira Hayashi |
| 1991 | Pan Pacific Championship | 200m butterfly | Men | 3 | 2 | Keiichi Kawanaka |
| 1991 | Pan Pacific Championship | 200m backstroke | Men | 3 | 2 | Hajime Itoi |
| 1990 | Asian Games | 4x100m medley | Men | 2 | 12 | – |
| 1990 | Asian Games | 4x100m freestyle | Men | 2 | 12 | – |
| 1990 | Asian Games | 200m breaststroke | Men | 1 | 7 | Kenji Watanabe |
| 1990 | Asian Games | 1500m freestyle | Men | 1 | 7 | Masayuki Fujimoto |
| 1990 | Asian Games | 100m butterfly | Men | 3 | 2 | Tomohiro Miyoshi |
| 1990 | Asian Games | 100m breaststroke | Men | 3 | 2 | Nobuyuki Kawaguchi |
| 1990 | Asian Games | 200m freestyle | Men | 2 | 4 | Tomohiro Noguchi |
| 1990 | Asian Games | 200m butterfly | Men | 2 | 4 | Tomohiro Miyoshi |
| 1990 | Asian Games | 200m breaststroke | Men | 2 | 4 | Nobuyuki Kawaguchi |
| 1990 | Asian Games | 400m freestyle | Men | 2 | 4 | Takafumi Asahara |
| 1990 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1990 | Asian Games | 200m butterfly | Men | 1 | 7 | Kunio Sugimoto |
| 1990 | Asian Games | 100m butterfly | Men | 2 | 4 | Kunio Sugimoto |
| 1990 | Asian Games | 200m backstroke | Men | 2 | 4 | Keita Soraoka |
| 1990 | Asian Games | 200m backstroke | Men | 3 | 2 | Hajime Itoi |
| 1990 | Asian Games | 200m individual medley | Men | 2 | 4 | Shuichi Nakamura |
| 1990 | Asian Games | 1500m freestyle | Men | 3 | 2 | Masashi Kato |
| 1990 | Asian Games | 400m individual medley | Men | 2 | 4 | Shuichi Nakamura |
| 1990 | Asian Games | 100m backstroke | Men | 2 | 4 | Hajime Itoi |
| 1990 | Asian Games | 100m backstroke | Men | 3 | 2 | Keita Soraoka |
| 1990 | Asian Games | 400m individual medley | Men | 1 | 7 | Takahiro Fujimoto |
| 1990 | Asian Games | 400m freestyle | Men | 1 | 7 | Tomohiro Noguchi |
| 1990 | Asian Games | 100m breaststroke | Men | 2 | 4 | Kenji Watanabe |
| 1990 | Asian Games | 200m individual medley | Men | 1 | 7 | Takahiro Fujimoto |
| 1988 | Olympic Games | 100m backstroke | Men | 1 | 30 | Daichi Suzuki |
| 1987 | Pan Pacific Championship | 100m backstroke | Men | 2 | 4 | Daichi Suzuki |
| 1986 | Asian Games | 400m individual medley | Men | 2 | 4 | Satoshi Takeda |
| 1986 | Asian Games | 100m backstroke | Men | 2 | 4 | Shigemori Maruyama |
| 1986 | Asian Games | 200m butterfly | Men | 3 | 2 | Yukinori Tanaka |
| 1986 | Asian Games | 400m individual medley | Men | 1 | 7 | Naritoshi Matsuda |
| 1986 | Asian Games | 100m breaststroke | Men | 2 | 4 | Hisashi Fuwa |
| 1986 | Asian Games | 200m individual medley | Men | 1 | 7 | Naritoshi Matsuda |
| 1986 | Asian Games | 1500m freestyle | Men | 2 | 4 | Shigeo Ogata |
| 1986 | Asian Games | 100m freestyle | Men | 1 | 7 | Katsunori Fujiwara |
| 1986 | Asian Games | 4x100m freestyle | Men | 2 | 12 | – |
| 1986 | Asian Games | 200m individual medley | Men | 3 | 2 | Satoshi Takeda |
| 1986 | Asian Games | 200m breaststroke | Men | 1 | 7 | Kenji Watanabe |
| 1986 | Asian Games | 100m butterfly | Men | 3 | 2 | Hiroshi Sato |
| 1986 | Asian Games | 100m breaststroke | Men | 3 | 2 | Kenji Watanabe |
| 1986 | Asian Games | 200m freestyle | Men | 1 | 7 | Katsunori Fujiwara |
| 1986 | Asian Games | 200m freestyle | Men | 2 | 4 | Shigeo Ogata |
| 1986 | Asian Games | 200m breaststroke | Men | 2 | 4 | Naritoshi Matsuda |
| 1986 | Asian Games | 400m freestyle | Men | 2 | 4 | Shigeo Ogata |
| 1986 | Asian Games | 100m butterfly | Men | 1 | 7 | Hiroshi Miura |
| 1986 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1986 | Asian Games | 200m butterfly | Men | 1 | 7 | Hiroshi Sato |
| 1986 | Asian Games | 100m backstroke | Men | 1 | 7 | Daichi Suzuki |
| 1986 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1986 | Asian Games | 200m backstroke | Men | 1 | 7 | Kazuya Ikeda |
| 1986 | Asian Games | 200m backstroke | Men | 3 | 2 | Shigemori Maruyama |
| 1982 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1982 | Asian Games | 200m butterfly | Men | 1 | 7 | Taihei Saka |
| 1982 | Asian Games | 100m backstroke | Men | 1 | 7 | Kenji Ikeda |
| 1982 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1982 | Asian Games | 400m individual medley | Men | 3 | 2 | Shinji Ito |
| 1982 | Asian Games | 200m backstroke | Men | 1 | 7 | Hidetoshi Takahashi |
| 1982 | Asian Games | 400m freestyle | Men | 1 | 7 | Ikuhiro Terashita |
| 1982 | Asian Games | 100m backstroke | Men | 2 | 4 | Hidetoshi Takahashi |
| 1982 | Asian Games | 200m butterfly | Men | 3 | 2 | Masakazu Hirata |
| 1982 | Asian Games | 400m individual medley | Men | 1 | 7 | Keiichi Ohata |
| 1982 | Asian Games | 1500m freestyle | Men | 1 | 7 | Kimihiro Anzai |
| 1982 | Asian Games | 100m breaststroke | Men | 2 | 4 | Shigehiro Takahashi |
| 1982 | Asian Games | 1500m freestyle | Men | 2 | 4 | Keisuke Okuno |
| 1982 | Asian Games | 4x100m freestyle | Men | 2 | 12 | – |
| 1982 | Asian Games | 200m individual medley | Men | 3 | 2 | Shinji Ito |
| 1982 | Asian Games | 200m breaststroke | Men | 1 | 7 | Naritoshi Matsuda |
| 1982 | Asian Games | 200m breaststroke | Men | 3 | 2 | Shigehiro Takahashi |
| 1982 | Asian Games | 200m individual medley | Men | 2 | 4 | Keiichi Ohata |
| 1982 | Asian Games | 100m butterfly | Men | 1 | 7 | Taihei Saka |
| 1978 | Asian Games | 200m breaststroke | Men | 1 | 7 | Shigehiro Takahashi |
| 1978 | Asian Games | 4x100m freestyle | Men | 1 | 21 | – |
| 1978 | Asian Games | 200m freestyle | Men | 3 | 2 | Hiroshi Sakamoto |
| 1978 | Asian Games | 200m backstroke | Men | 3 | 2 | Kenji Ikeda |
| 1978 | Asian Games | 200m individual medley | Men | 2 | 4 | Kozo Tatsumi |
| 1978 | Asian Games | 100m butterfly | Men | 1 | 7 | Shinsuke Kayama |
| 1978 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1978 | Asian Games | 200m butterfly | Men | 1 | 7 | Shinsuke Kayama |
| 1978 | Asian Games | 100m breaststroke | Men | 1 | 7 | Shigehiro Takahashi |
| 1978 | Asian Games | 100m backstroke | Men | 1 | 7 | Kenji Ikeda |
| 1978 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1978 | Asian Games | 400m individual medley | Men | 2 | 4 | Tsuyoshi Yanagidate |
| 1978 | Asian Games | 200m backstroke | Men | 1 | 7 | Tsuyoshi Takahashi |
| 1978 | Asian Games | 400m freestyle | Men | 1 | 7 | Shuji Tsukasaki |
| 1978 | Asian Games | 200m individual medley | Men | 1 | 7 | Tsuyoshi Yanagidate |
| 1978 | Asian Games | 100m backstroke | Men | 2 | 4 | Tsuyoshi Takahashi |
| 1978 | Asian Games | 100m freestyle | Men | 1 | 7 | Tsuyoshi Yanagidate |
| 1978 | Asian Games | 400m individual medley | Men | 1 | 7 | Kozo Tatsumi |
| 1978 | Asian Games | 1500m freestyle | Men | 1 | 7 | Shuji Tsukasaki |
| 1978 | Asian Games | 100m breaststroke | Men | 2 | 4 | Hiroshi Kabatani |
| 1978 | Asian Games | 200m breaststroke | Men | 2 | 4 | Hiroshi Kabatani |
| 1978 | Asian Games | 400m freestyle | Men | 2 | 4 | Kazuhiko Yoshihara |
| 1978 | Asian Games | 1500m freestyle | Men | 2 | 4 | Takehiko Kawakami |
| 1975 | World Championship | 100m breaststroke | Men | 2 | 6 | Nobutaka Taguchi |
| 1974 | Asian Games | 400m individual medley | Men | 1 | 7 | Tsuyoshi Yanagidate |
| 1974 | Asian Games | 100m freestyle | Men | 3 | 2 | Akira Iida |
| 1974 | Asian Games | 100m backstroke | Men | 3 | 2 | Toshimitsu Yamamoto |
| 1974 | Asian Games | 200m breaststroke | Men | 3 | 2 | Kenichi Ueda |
| 1974 | Asian Games | 400m freestyle | Men | 2 | 4 | Shuji Ono |
| 1974 | Asian Games | 1500m freestyle | Men | 2 | 4 | Shuji Ono |
| 1974 | Asian Games | 200m breaststroke | Men | 1 | 7 | Nobutaka Taguchi |
| 1974 | Asian Games | 4x100m freestyle | Men | 1 | 21 | – |
| 1974 | Asian Games | 200m backstroke | Men | 3 | 2 | Toshimitsu Yamamoto |
| 1974 | Asian Games | 100m butterfly | Men | 1 | 7 | Hideaki Hara |
| 1974 | Asian Games | 200m individual medley | Men | 2 | 4 | Tsuyoshi Yanagidate |
| 1974 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1974 | Asian Games | 200m butterfly | Men | 1 | 7 | Yasuhiro Komazaki |
| 1974 | Asian Games | 100m breaststroke | Men | 1 | 7 | Nobutaka Taguchi |
| 1974 | Asian Games | 100m backstroke | Men | 1 | 7 | Tadashi Honda |
| 1974 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1974 | Asian Games | 400m individual medley | Men | 2 | 4 | Jiro Sasaki |
| 1974 | Asian Games | 200m butterfly | Men | 2 | 4 | Hideaki Hara |
| 1974 | Asian Games | 400m freestyle | Men | 3 | 2 | Kaname Sakamoto |
| 1974 | Asian Games | 200m backstroke | Men | 1 | 7 | Tadashi Honda |
| 1974 | Asian Games | 100m butterfly | Men | 3 | 2 | Yasuhiro Komazaki |
| 1974 | Asian Games | 200m individual medley | Men | 1 | 7 | Jiro Sasaki |
| 1974 | Asian Games | 100m breaststroke | Men | 3 | 2 | Kenichi Ueda |
| 1974 | Asian Games | 200m freestyle | Men | 1 | 7 | Yukio Horiuchi |
| 1973 | World Championship | 100m breaststroke | Men | 3 | 3 | Nobutaka Taguchi |
| 1973 | World Championship | 200m breaststroke | Men | 3 | 3 | Nobutaka Taguchi |
| 1972 | Olympic Games | 100m breaststroke | Men | 1 | 30 | Nobutaka Taguchi |
| 1972 | Olympic Games | 200m breaststroke | Men | 3 | 6 | Nobutaka Taguchi |
| 1970 | Asian Games | 200m backstroke | Men | 1 | 7 | Tadashi Honda |
| 1970 | Asian Games | 200m freestyle | Men | 1 | 7 | Kunihiro Iwasaki |
| 1970 | Asian Games | 400m individual medley | Men | 1 | 7 | Toru Udo |
| 1970 | Asian Games | 100m freestyle | Men | 2 | 4 | Kunihiro Iwasaki |
| 1970 | Asian Games | 400m freestyle | Men | 2 | 4 | Akira Iida |
| 1970 | Asian Games | 1500m freestyle | Men | 2 | 4 | Akira Iida |
| 1970 | Asian Games | 200m breaststroke | Men | 1 | 7 | Nobutaka Taguchi |
| 1970 | Asian Games | 4x100m freestyle | Men | 1 | 21 | – |
| 1970 | Asian Games | 100m butterfly | Men | 2 | 4 | Satoshi Maruya |
| 1970 | Asian Games | 100m butterfly | Men | 1 | 7 | Yasuhiro Komazaki |
| 1970 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1970 | Asian Games | 200m butterfly | Men | 1 | 7 | Yasuhiro Komazaki |
| 1970 | Asian Games | 100m breaststroke | Men | 1 | 7 | Nobutaka Taguchi |
| 1970 | Asian Games | 100m backstroke | Men | 1 | 7 | Tadashi Honda |
| 1970 | Asian Games | 200m freestyle | Men | 2 | 4 | Noboru Waseda |
| 1970 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1970 | Asian Games | 400m individual medley | Men | 2 | 4 | Junhachiro Tsutsumi |
| 1970 | Asian Games | 200m butterfly | Men | 2 | 4 | Satoshi Maruya |
| 1970 | Asian Games | 200m backstroke | Men | 2 | 4 | Koji Hoshino |
| 1970 | Asian Games | 100m backstroke | Men | 2 | 4 | Koji Hoshino |
| 1970 | Asian Games | 100m freestyle | Men | 1 | 7 | Shojiro Sawa |
| 1970 | Asian Games | 1500m freestyle | Men | 3 | 2 | Toshinori Murata |
| 1970 | Asian Games | 400m freestyle | Men | 3 | 2 | Toshinori Murata |
| 1966 | Asian Games | 1500m freestyle | Men | 1 | 7 | Etsujiro Takase |
| 1966 | Asian Games | 100m butterfly | Men | 3 | 2 | Yasuo Takada |
| 1966 | Asian Games | 100m breaststroke | Men | 2 | 4 | Koichi Yamanami |
| 1966 | Asian Games | 100m butterfly | Men | 1 | 7 | Isao Nakajima |
| 1966 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1966 | Asian Games | 200m butterfly | Men | 1 | 7 | Yasuo Takada |
| 1966 | Asian Games | 100m breaststroke | Men | 1 | 7 | Kenji Ishikawa |
| 1966 | Asian Games | 100m backstroke | Men | 1 | 7 | Yushiro Hayashi |
| 1966 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1966 | Asian Games | 200m butterfly | Men | 2 | 4 | Shinji Yamanouchi |
| 1966 | Asian Games | 200m breaststroke | Men | 2 | 4 | Kenji Ishikawa |
| 1966 | Asian Games | 200m backstroke | Men | 2 | 4 | Yushiro Hayashi |
| 1966 | Asian Games | 100m backstroke | Men | 2 | 4 | Kishio Tanaka |
| 1966 | Asian Games | 100m freestyle | Men | 1 | 7 | Kunihiro Iwasaki |
| 1966 | Asian Games | 200m backstroke | Men | 1 | 7 | Shigeo Fukushima |
| 1966 | Asian Games | 200m freestyle | Men | 1 | 7 | Kunihiro Iwasaki |
| 1966 | Asian Games | 400m individual medley | Men | 1 | 7 | Shigeo Fukushima |
| 1966 | Asian Games | 100m freestyle | Men | 2 | 4 | Teruhiko Kitani |
| 1966 | Asian Games | 400m freestyle | Men | 1 | 7 | Etsujiro Takase |
| 1966 | Asian Games | 1500m freestyle | Men | 2 | 4 | Katsuji Ito |
| 1966 | Asian Games | 200m breaststroke | Men | 1 | 7 | Koichi Yamanami |
| 1964 | Olympic Games | 4x200m freestyle | Men | 3 | 18 | – |
| 1962 | Asian Games | 100m butterfly | Men | 2 | 4 | Koji Iwamoto |
| 1962 | Asian Games | 1500m freestyle | Men | 2 | 4 | Tohachiro Matsuki |
| 1962 | Asian Games | 200m breaststroke | Men | 1 | 7 | Kiyoshi Nakagawa |
| 1962 | Asian Games | 200m freestyle | Men | 2 | 4 | Tadaharu Goto |
| 1962 | Asian Games | 1500m freestyle | Men | 3 | 2 | Toshiaki Sahara |
| 1962 | Asian Games | 400m freestyle | Men | 3 | 2 | Masami Nakabo |
| 1962 | Asian Games | 100m breaststroke | Men | 2 | 4 | Kiyoshi Nakagawa |
| 1962 | Asian Games | 100m butterfly | Men | 1 | 7 | Kenzo Izutsu |
| 1962 | Asian Games | 200m butterfly | Men | 1 | 7 | Kenzo Izutsu |
| 1962 | Asian Games | 100m breaststroke | Men | 1 | 7 | Kenji Ishikawa |
| 1962 | Asian Games | 100m backstroke | Men | 1 | 7 | Kazuo Tomita |
| 1962 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1962 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1962 | Asian Games | 200m butterfly | Men | 2 | 4 | Koji Iwamoto |
| 1962 | Asian Games | 200m breaststroke | Men | 2 | 4 | Kenji Ishikawa |
| 1962 | Asian Games | 200m backstroke | Men | 2 | 4 | Kazuo Tomita |
| 1962 | Asian Games | 100m backstroke | Men | 2 | 4 | Keisuke Ito |
| 1962 | Asian Games | 100m freestyle | Men | 1 | 7 | Keigo Shimizu |
| 1962 | Asian Games | 200m backstroke | Men | 1 | 7 | Keisuke Ito |
| 1962 | Asian Games | 200m freestyle | Men | 1 | 7 | Toshizo Umemoto |
| 1962 | Asian Games | 400m freestyle | Men | 2 | 4 | Toshizo Umemoto |
| 1962 | Asian Games | 100m freestyle | Men | 2 | 4 | Tadaharu Goto |
| 1960 | Olympic Games | 200m breaststroke | Men | 2 | 18 | Yoshihiko Osaki |
| 1960 | Olympic Games | 4x100m medley | Men | 3 | 18 | – |
| 1960 | Olympic Games | 4x200m freestyle | Men | 2 | 54 | – |
| 1960 | Olympic Games | 400m freestyle | Men | 2 | 18 | Tsuyoshi Yamanaka |
| 1958 | Asian Games | 400m freestyle | Men | 1 | 7 | Tsuyoshi Yamanaka |
| 1958 | Asian Games | 400m freestyle | Men | 2 | 4 | Nagatoshi Maruyama |
| 1958 | Asian Games | 100m freestyle | Men | 3 | 2 | Shintaro Yokochi |
| 1958 | Asian Games | 100m butterfly | Men | 2 | 4 | Fumiaki Masunaga |
| 1958 | Asian Games | 1500m freestyle | Men | 1 | 7 | Tsuyoshi Yamanaka |
| 1958 | Asian Games | 1500m freestyle | Men | 2 | 4 | Hiroshi Ishii |
| 1958 | Asian Games | 200m breaststroke | Men | 3 | 2 | Hajime Waki |
| 1958 | Asian Games | 200m breaststroke | Men | 1 | 7 | Masaru Furukawa |
| 1958 | Asian Games | 200m freestyle | Men | 2 | 4 | Tatsuo Fujimoto |
| 1958 | Asian Games | 100m breaststroke | Men | 2 | 4 | Akio Sugiyama |
| 1958 | Asian Games | 100m butterfly | Men | 1 | 7 | Takashi Ishimoto |
| 1958 | Asian Games | 200m butterfly | Men | 1 | 7 | Takashi Ishimoto |
| 1958 | Asian Games | 100m breaststroke | Men | 1 | 7 | Masaru Ota |
| 1958 | Asian Games | 100m backstroke | Men | 1 | 7 | Keiji Hase |
| 1958 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1958 | Asian Games | 4x100m medley | Men | 1 | 21 | – |
| 1958 | Asian Games | 200m butterfly | Men | 2 | 4 | Koichi Hirakida |
| 1958 | Asian Games | 200m backstroke | Men | 2 | 4 | Kazuo Watanabe |
| 1958 | Asian Games | 100m backstroke | Men | 2 | 4 | Hideo Ninomiya |
| 1958 | Asian Games | 100m freestyle | Men | 1 | 7 | Manabu Koga |
| 1958 | Asian Games | 200m backstroke | Men | 1 | 7 | Kazuo Tomita |
| 1958 | Asian Games | 200m freestyle | Men | 1 | 7 | Makoto Fukui |
| 1956 | Olympic Games | 400m freestyle | Men | 2 | 18 | Tsuyoshi Yamanaka |
| 1956 | Olympic Games | 200m butterfly | Men | 2 | 18 | Takashi Ishimoto |
| 1956 | Olympic Games | 1500m freestyle | Men | 2 | 18 | Tsuyoshi Yamanaka |
| 1956 | Olympic Games | 200m breaststroke | Men | 2 | 18 | Masahiro Yoshimura |
| 1956 | Olympic Games | 200m breaststroke | Men | 1 | 30 | Masaru Furukawa |
| 1954 | Asian Games | 100m backstroke | Men | 2 | 4 | Norihiko Kurahashi |
| 1954 | Asian Games | 100m freestyle | Men | 1 | 7 | Hiroshi Suzuki |
| 1954 | Asian Games | 100m freestyle | Men | 2 | 4 | Teijiro Tanikawa |
| 1954 | Asian Games | 400m freestyle | Men | 1 | 7 | Yoshihiro Shoji |
| 1954 | Asian Games | 400m freestyle | Men | 2 | 4 | Katsuji Yamashita |
| 1954 | Asian Games | 100m backstroke | Men | 3 | 2 | Takuro Ashida |
| 1954 | Asian Games | 1500m freestyle | Men | 3 | 2 | Tsutomu Nagashima |
| 1954 | Asian Games | 1500m freestyle | Men | 1 | 7 | Yukiyoshi Aoki |
| 1954 | Asian Games | 1500m freestyle | Men | 2 | 4 | Shichiro Shintaku |
| 1954 | Asian Games | 200m breaststroke | Men | 3 | 2 | Masao Togami |
| 1954 | Asian Games | 200m breaststroke | Men | 1 | 7 | Mamoru Tanaka |
| 1954 | Asian Games | 200m breaststroke | Men | 2 | 4 | Masaru Furukawa |
| 1954 | Asian Games | 100m backstroke | Men | 1 | 7 | Keiji Hase |
| 1954 | Asian Games | 4x200m freestyle | Men | 1 | 21 | – |
| 1952 | Olympic Games | 100m freestyle | Men | 2 | 18 | Hiroshi Suzuki |
| 1952 | Olympic Games | 1500m freestyle | Men | 2 | 18 | Shiro Hashizume |
| 1952 | Olympic Games | 4x200m freestyle | Men | 2 | 54 | – |
| 1936 | Olympic Games | 100m backstroke | Men | 3 | 6 | Masaji Kiyokawa |
| 1936 | Olympic Games | 200m breaststroke | Men | 1 | 30 | Tetsuo Hamuro |
| 1936 | Olympic Games | 200m breaststroke | Men | 3 | 6 | Reizo Koike |
| 1936 | Olympic Games | 400m freestyle | Men | 3 | 6 | Shozo Makino |
| 1936 | Olympic Games | 1500m freestyle | Men | 3 | 6 | Shunpei Uto |
| 1936 | Olympic Games | 400m freestyle | Men | 2 | 18 | Shunpei Uto |
| 1936 | Olympic Games | 1500m freestyle | Men | 1 | 30 | Noboru Terada |
| 1936 | Olympic Games | 4x200m freestyle | Men | 1 | 90 | – |
| 1936 | Olympic Games | 100m freestyle | Men | 2 | 18 | Masanori Yusa |
| 1936 | Olympic Games | 100m freestyle | Men | 3 | 6 | Shigeo Arai |
| 1932 | Olympic Games | 200m breaststroke | Men | 2 | 18 | Reizo Koike |
| 1932 | Olympic Games | 100m freestyle | Men | 2 | 18 | Tatsugo Kawaishi |
| 1932 | Olympic Games | 1500m freestyle | Men | 2 | 18 | Shozo Makino |
| 1932 | Olympic Games | 100m backstroke | Men | 1 | 30 | Masaji Kiyokawa |
| 1932 | Olympic Games | 100m backstroke | Men | 3 | 6 | Kentaro Kawatsu |
| 1932 | Olympic Games | 100m freestyle | Men | 1 | 30 | Yasuji Miyazaki |
| 1932 | Olympic Games | 200m breaststroke | Men | 1 | 30 | Yoshiyuki Tsuruta |
| 1932 | Olympic Games | 400m freestyle | Men | 3 | 6 | Tsutomu Ōyokota |
| 1932 | Olympic Games | 100m backstroke | Men | 2 | 18 | Toshio Irie |
| 1932 | Olympic Games | 1500m freestyle | Men | 1 | 30 | Kusuo Kitamura |
| 1932 | Olympic Games | 4x200m freestyle | Men | 1 | 90 | – |
| 1928 | Olympic Games | 4x200m freestyle | Men | 2 | 54 | – |
| 1928 | Olympic Games | 100m freestyle | Men | 3 | 6 | Katsuo Takaishi |
| 1928 | Olympic Games | 200m breaststroke | Men | 1 | 30 | Yoshiyuki Tsuruta |