| Event | Name | Team | Time | Date | Meet |
|---|---|---|---|---|---|
| 50 Free | Shuya Matsumoto |
JPN | 21.64 | 07/27/25 | Shizuoka Championships
Fuji, Japan |
| 100 Free | Katsumi Nakamura |
JPN | 47.87 | 02/18/18 | Konami Open
Tokyo, Japan |
| 200 Free | Tatsuya Murasa |
JPN | 1:44.54 | 07/29/25 | 2025 World Championships
Singapore, Singapore |
| 400 Free | Kosuke Hagino |
JPN | 3:43.90 | 04/12/14 | 2014 Japanese Championships
Tokyo, Japan |
| 800 Free | Kazushi Imafuku |
JPN | 7:48.34 | 08/21/25 | 2025 World Junior Championships
Otopeni, Romania |
| 1500 Free | Kaito Tabuchi |
JPN | 14:45.57 | 03/22/26 | 101st Japan Swim
Tokyo, Japan |
| 50 Back | Junya Koga |
JPN | 24.24 | 08/02/09 | 2009 World Championships
Rome, Italy |
| 100 Back | Ryosuke Irie |
JPN | 52.24 | 09/05/09 | Japanese University Championships
Kumamoto, Japan |
| 200 Back | Ryosuke Irie |
JPN | 1:52.51 | 07/31/09 | 2009 World Championships
Rome, Itlay |
| 50 Breast | Taku Taniguchi |
JPN | 26.65 | 07/29/25 | 2025 World Championships
Singapore, Singapore |
| 100 Breast | Shin Ohashi |
JPN | 58.67 | 03/19/26 | 101st Japan Open
Tokyo, Japan |
| 200 Breast | Shoma Sato |
JPN | 2:06.40 | 04/07/21 | 2021 Japan Swim
Tokyo, Japan |
| 50 Fly | Taikan Tanaka |
JPN | 23.06 | 03/20/25 | 2025 Japanese Championships
Tokyo, Japan |
| 50 Fly | Shoon Mitsunaga |
JPN | 23.06 | 03/19/26 | 101st Japan Open
Tokyo, Japan |
| 100 Fly | Naoki Mizunuma |
JPN | 50.81 | 06/23/22 | 2022 World Championships
Budapest, Hungary |
| 200 Fly | Daiya Seto |
JPN | 1:52.53 | 01/18/20 | 2020 FINA Champions Series
Beijing, China |
| 200 IM | Kosuke Hagino |
JPN | 1:55.07 | 04/09/16 | 2016 Japanese Championships
Tokyo, Japan |
| 400 IM | Kosuke Hagino |
JPN | 4:06.05 | 08/06/16 | 2016 Olympic Games
Rio de Janeiro, Brazil |
| Relay | Team | Time | Date | Meet |
|---|---|---|---|---|
| 400 Free Relay |
JPN
Katsumi Nakamura Shinri Shioura Katsuhiro Matsumoto Juran Mizohata |
3:12.54 | 08/11/18 | 2018 Pan Pacific Championships
Tokyo, Japan |
| 800 Free Relay |
JPN
Sho Uchida Yoshihiro Okumura Shogo Hihara Takeshi Matsuda |
7:02.26 | 07/31/08 | 2009 World Championships
Rome, Italy |
| 400 Medley Relay |
JPN
Ryosuke Irie Ryuya Mura Naoki Mizunuma Katsumi Namakura |
3:29.91 | 08/01/21 | 2020 Olympic Games
Tokyo, Japan |
