Svømning - Asian Games |  | ||||
Asian Games Champions 400 m medley M |
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| Hangzhou 2023 |  | JPN | Tomoru Honda | |
| Jakarta 2018 | | JPN | Daiya Seto | |
| Incheon 2014 | | JPN | Kosuke Hagino | |
| Guangzhou 2010 | | JPN | Yuya Horihata | |
| Doha 2006 | | JPN | Hidemasa Sano | |
| Busan 2002 |  | CHN | Wu Peng | |
| Bangkok 1998 | | JPN | Takahiro Mori | |
| Hiroshima 1994 |  | THA | Ratapong Sirisanont | |
| Beijing 1990 | | JPN | Takahiro Fujimoto | |
| Seoul 1986 | | JPN | Naritoshi Matsuda | |
| New Delhi 1982 | | JPN | Keiichi Ohata | |
| Bangkok 1978 | | JPN | Kozo Tatsumi | |
| Teheran 1974 | | JPN | Tsuyoshi Yanagidate | |
| Bangkok 1970 | | JPN | Toru Udo | |
| Bangkok 1966 | | JPN | Shigeo Fukushima | |
| VM | ||||
