These are the Japanese Records in Swimming: they are the fastest times ever swum by a swimmer from Japan in recognized events. The records are kept and maintained by the Japan Swimming Federation (JSF). The JSF recognizes records swum in both long course (50m) and short course (25m) pools.

Long course (50 metres)

Men

Event Time Name Club Date Meet Location Ref
50m freestyle 21.67 sf, AS Shinri Shioura Itoman Toshin 7 April 2019 Japanese Championships Tokyo, Japan [1]
100m freestyle 47.85 Katsuhiro Matsumoto Mitsuuroko 6 April 2023 Japanese Championships Tokyo, Japan [2]
200m freestyle 1:44.65 Katsuhiro Matsumoto Central Sports 5 April 2021 Japanese Championships Tokyo, Japan [3]
400m freestyle 3:43.90 Kosuke Hagino Toyo University 12 April 2014 Japanese Championships Tokyo, Japan [4]
800m freestyle 7:49.55 Shui Kurokawa Itoman Tondabayashi 7 April 2021 Japanese Championships Tokyo, Japan [5]
1500m freestyle 14:54.80 Kohei Yamamoto Mizuno 20 June 2014 Japan Open Tokyo, Japan [6]
50m backstroke 24.24 AS Junya Koga  Japan 2 Aug 2009 World Championships Rome, Italy [7]
100m backstroke 52.24 r Ryosuke Irie Kinki University 5 Sep 2009 Japanese University Championships Kumamoto, Japan [8]
200m backstroke 1:52.51 AS Ryosuke Irie  Japan 31 Jul 2009 World Championships Rome, Italy [9]
50m breaststroke 26.94 Yasuhiro Koseki  Japan 17 June 2018 Mare Nostrum Monte Carlo, Monaco [10]
100m breaststroke 58.78 Yasuhiro Koseki  Japan 17 June 2018 Mare Nostrum Monte Carlo, Monaco [11]
200m breaststroke 2:06.40 AS Shoma Sato Tokyo SC 7 April 2021 Japanese Championships Tokyo, Japan [12]
50m butterfly 23.13 h Takeshi Kawamoto Toyota 4 April 2023 Japanese Championships Tokyo, Japan [13]
100m butterfly 50.81 sf Naoki Mizunuma  Japan 23 June 2022 World Championships Budapest, Hungary [14]
200m butterfly 1:52.53 AS Daiya Seto  Japan 18 January 2020 Champions Swim Series Beijing, China [15]
200m individual medley 1:55.07 Kosuke Hagino Toyo University 9 April 2016 Japanese Championships Tokyo, Japan [16]
400m individual medley 4:06.05 AS Kosuke Hagino  Japan 6 August 2016 Olympic Games Rio de Janeiro, Brazil [17]
4×50m freestyle relay 1:27.48
 Japan 3 July 2021 Summer Challenge Meet Sagamihara, Japan [18]
4×100m freestyle relay 3:12.54
 Japan 11 August 2018 Pan Pacific Championships Tokyo, Japan [19]
4×200m freestyle relay 7:02.26
 Japan 31 July 2009 World Championships Rome, Italy [20]
4×100m medley relay 3:29.91
 Japan 1 August 2021 Olympic Games Tokyo, Japan [21]
Legend: # – Record awaiting ratification by Japan Swimming Federation; WR – World record; AS – Asian record;
Records not set in finals: h – heat; sf – semifinal; r – relay 1st leg; rh – relay heat 1st leg; b – B final; † – en route to final mark; tt – time trial

Women

Event Time Name Club Date Meet Location Ref
50m freestyle 24.21 Rikako Ikee Renaissance Kameido 6 April 2018 Japanese Championships Tokyo, Japan [22]
100m freestyle 52.79 Rikako Ikee Renaissance Kameido 18 November 2018 Kosuke Kitajima Cup Tokyo, Japan [23]
200m freestyle 1:54.85 Rikako Ikee  Japan 9 August 2018 Pan Pacific Championships Tokyo, Japan [24]
400m freestyle 4:05.19 Ai Shibata  Japan 25 Mar 2007 World Championships Melbourne, Australia
800m freestyle 8:23.68 Sachiko Yamada Konami 23 Apr 2004 Japanese Championships Tokyo, Japan
1500m freestyle 15:58.55 Ai Shibata  Japan 27 Mar 2007 World Championships Melbourne, Australia
50m backstroke 27.51 Aya Terakawa Mizuno 13 April 2013 Japanese Championships Niigata, Japan
100m backstroke 58.70 r, AS Aya Terakawa  Japan 4 August 2013 World Championships Barcelona, Spain [25]
200m backstroke 2:07.13 Reiko Nakamura  Japan 16 Aug 2008 Olympic Games Beijing, China
50m breaststroke 30.10 Satomi Suzuki  Japan 8 October 2023 Shizuoka Invitational Sprint Championships Shizuoka, Japan [26]
100m breaststroke 1:05.19 AS Reona Aoki Mizuno 2 March 2022 Japanese World Championships Trials Tokyo, Japan [27]
200m breaststroke 2:19.65 AS Rie Kaneto Jaked 9 April 2016 Japanese Championships Tokyo, Japan [28]
50m butterfly 25.11 AS Rikako Ikee  Japan 10 June 2018 Mare Nostrum Canet-en-Roussillon, France [29]
100m butterfly 56.08 Rikako Ikee  Japan 11 August 2018 Pan Pacific Championships Tokyo, Japan [30]
200m butterfly 2:04.69 Natsumi Hoshi Swin Daikyo 5 April 2012 Japanese Championships Tokyo, Japan [31]
200m individual medley 2:07.91 Yui Ohashi  Japan 24 July 2017 World Championships Budapest, Hungary [32]
400m individual medley 4:30.82 Yui Ohashi Itoman Toshin 8 April 2018 Japanese Championships Tokyo, Japan [33]
4×50m freestyle relay 1:39.67
 Japan 4 July 2021 Summer Challenge Meet Sagamihara, Japan [34]
4×100m freestyle relay 3:36.17 h
 Japan 21 July 2019 World Championships Gwangju, South Korea [35]
4×200m freestyle relay 7:48.96
 Japan 10 August 2018 Pan Pacific Championships Tokyo, Japan [36]
4×100m medley relay 3:54.73
 Japan 23 August 2018 Asian Games Jakarta, Indonesia [37]
Legend: # – Record awaiting ratification by Japan Swimming Federation; WR – World record; AS – Asian record;
Records not set in finals: h – heat; sf – semifinal; r – relay 1st leg; rh – relay heat 1st leg; b – B final; † – en route to final mark; tt – time trial

Mixed relay

Event Time Name Club Date Meet Location Ref
4×50m freestyle relay
4×100m freestyle relay 3:24.67 AS
 Japan 27 July 2019 World Championships Gwangju, South Korea [38]
4×50m medley relay
4×100m medley relay 3:40.98
 Japan 9 August 2018 Pan Pacific Championships Tokyo, Japan [39]
Legend: # – Record awaiting ratification by Japan Swimming Federation; WR – World record; AS – Asian record;
Records not set in finals: h – heat

Short course (25 m)

Men

Event Time Name Club Date Meet Location Ref
50m freestyle 20.95 AS Kosuke Matsui NUHW 26 October 2019 Japanese Championships Tokyo, Japan [40]
100m freestyle 46.22 r Katsumi Nakamura  Japan 11 December 2018 World Championships Hangzhou, China [41]
200m freestyle 1:41.29 h Katsuhiro Matsumoto  Japan 18 December 2022 World Championships Melbourne, Australia [42]
400m freestyle 3:37.94 Katsuhiro Matsumoto Central Sports 11 January 2020 Chiba New Year Championships Chiba, Japan
400m freestyle 3:36.87 not ratified Katsuhiro Matsumoto  Japan 15 December 2022 World Championships Melbourne, Australia [43]
800m freestyle 7:33.78 AS Shogo Takeda  Japan 17 December 2022 World Championships Melbourne, Australia [44]
1500m freestyle 14:25.95 Shogo Takeda  Japan 13 December 2022 World Championships Melbourne, Australia [45]
50m backstroke 22.81 sf Junya Koga  Japan 8 December 2016 World Championships Windsor, Canada [46]
100m backstroke 49.65 Masaki Kaneko  Japan 11 August 2017 World Cup Eindhoven, Netherlands [47]
200m backstroke 1:48.25 AS Masaki Kaneko Yuras 17 January 2016 Tokyo New Year Championships Tokyo, Japan [48]
50m breaststroke 25.91 AS Yasuhiro Koseki Jieitai 17 October 2021 Japanese Championships Tokyo, Japan [49]
100m breaststroke 55.77 AS Yuya Hinomoto Aquatic 16 October 2021 Japanese Championships Tokyo, Japan [50]
200m breaststroke 2:00.35 AS Daiya Seto  Japan 16 December 2022 World Championships Melbourne, Australia [51]
50m butterfly 22.19 AS Takeshi Kawamoto Toyota 17 October 2020 Japanese Championships Tokyo, Japan [52]
100m butterfly 49.54 Takeshi Kawamoto Toyota 18 October 2020 Japanese Championships Tokyo, Japan [53]
200m butterfly 1:46.85 WR Tomoru Honda Nihon University 22 October 2022 Japanese Championships Tokyo, Japan [54]
100m individual medley 51.29 AS Daiya Seto  Japan 28 October 2021 World Cup Kazan, Russia [55]
200m individual medley 1:50.47 AS Kosuke Hagino  Japan 5 December 2014 World Championships Doha, Qatar [56]
400m individual medley 3:54.81 WR Daiya Seto Energy Standard 20 December 2019 International Swimming League Las Vegas, United States [57]
4×50m freestyle relay 1:23.80 AS
 Japan 15 December 2022 World Championships Melbourne, Australia [58]
4×100m freestyle relay 3:07.79 AS
 Japan 3 December 2014 World Championships Doha, Qatar [59]
4×200m freestyle relay 6:52.04
  • Temma Watanabe
     (1:43.78)
  • Katsuhiro Matsumoto
     (1:40.66)
  • Hidenari Mano
     (1:43.18)
  • Shuya Matsumoto
     (1:44.42)
  Japan 16 December 2022 World Championships Melbourne, Australia [60]
4×50m medley relay 1:31.28 AS
  • Takeshi Kawamoto
     (22.93)
  • Yuya Hinomoto
     (25.64)
  • Yuya Tanaka
     (22.13)
  • Masahiro Kawane
     (20.58)
  Japan 17 December 2022 World Championships Melbourne, Australia [61]
4×100m medley relay 3:21.07 AS
 Japan 16 December 2018 World Championships Hangzhou, China [62]
Legend: # – Record awaiting ratification by Japan Swimming Federation; WR – World record; AS – Asian record;
Records not set in finals: h – heat; sf – semifinal; r – relay 1st leg; rh – relay heat 1st leg; b – B final; † – en route to final mark; tt – time trial

Women

Event Time Name Club Date Meet Location Ref
50m freestyle 23.95 Rikako Ikee  Japan 21 December 2017 Swim Cup Lausanne Lausanne, Switzerland [63]
100m freestyle 51.62 Rikako Ikee Renaissance Kameido 14 January 2018 New Year Championships Tokyo, Japan [64]
200m freestyle 1:52.64 Rikako Ikee Renaissance Kameido 13 January 2018 New Year Championships Tokyo, Japan [65]
400m freestyle 3:59.41 Chihiro Igarashi  Japan 9 December 2016 World Championships Windsor, Canada [66]
800m freestyle 8:12.98 Miyu Namba  Japan 14 December 2022 World Championships Melbourne, Australia [67]
1500m freestyle 15:44.84 AS Waka Kobori Central Totsuka 14 February 2021 National Junior Olympic Cup Qualifying Meet Yokohama, Japan [68]
50m backstroke 26.05 Aya Terakawa Mizuno 25 February 2013 Japanese Championships Tokyo, Japan [69]
100m backstroke 55.23 AS Shiho Sakai  Japan 15 November 2009 World Cup Berlin, Germany [70]
200m backstroke 2:00.18 AS Shiho Sakai  Japan 14 November 2009 World Cup Berlin, Germany [71]
50m breaststroke 29.57 AS Reona Aoki Tokyo Frog Kings 9 November 2020 International Swimming League Budapest, Hungary [72]
100m breaststroke 1:04.01 Reona Aoki Mizuno 22 October 2022 Japanese Championships Tokyo, Japan [73]
200m breaststroke 2:15.76 AS Rie Kaneto  Japan 9 October 2016 World Cup Doha, Qatar [74]
50m butterfly 24.71 AS Rikako Ikee Renaissance Kameido 13 January 2018 New Year Championships Tokyo, Japan [75]
100m butterfly 55.31 Rikako Ikee Renaissance Kameido 11 November 2018 World Cup Tokyo, Japan [76]
200m butterfly 2:02.96 Suzuka Hasegawa Tokyo Dome 14 January 2017 Tokyo New Year Championships Tokyo, Japan
100m individual medley 57.75 AS Rikako Ikee Renaissance Kameido 15 November 2017 World Cup Tokyo, Japan [77]
200m individual medley 2:03.93 AS Yui Ohashi Tokyo Frog Kings 14 November 2020 International Swimming League Budapest, Hungary [78]
400m individual medley 4:22.73 AS Yui Ohashi Itoman Toshin 10 November 2018 World Cup Tokyo, Japan [79]
4×50m freestyle relay 1:37.35
 Japan 16 December 2018 World Championships Hangzhou, China [80]
4×100m freestyle relay 3:31.68
 Japan 11 December 2018 World Championships Hangzhou, China [81]
4×200m freestyle relay 7:41.97
 Japan 10 December 2016 World Championships Windsor, Canada [82]
4×50m medley relay 1:44.90
 Japan 12 December 2018 World Championships Hangzhou, China [83]
4×100m medley relay 3:50.28
 Japan 11 December 2016 World Championships Windsor, Canada [84]
Legend: # – Record awaiting ratification by Japan Swimming Federation; WR – World record; AS – Asian record;
Records not set in finals: h – heat; sf – semifinal; r – relay 1st leg; rh – relay heat 1st leg; b – B final; † – en route to final mark; tt – time trial

Mixed relay

Event Time Name Club Date Meet Location Ref
4×50m freestyle relay 1:29.61 AS
 Japan 12 December 2018 World Championships Hangzhou, China [85]
4×50m medley relay 1:37.67
 Japan 13 December 2018 World Championships Hangzhou, China [86]
Legend: # – Record awaiting ratification by Japan Swimming Federation; AS – Asian record;
Records not set in finals: h – heat


References

General
Specific
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External links

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