- Professional Combat Sport Championship Histories -
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| Jackal Maruyama (Maruyama Ryōetsu) | 1980-12-02 | Tōkyō |
| Defeats Koguchi Satoshi; vacates on 81-10-04. | ||
| Itokazu Tsutomu | 1981-10-05 | Tōkyō |
| Defeats Koguchi Satoshi. | ||
| Jackal Maruyama [2] | 1982-11-09 | Tōkyō |
| Vacates on 83-10-11. | ||
| Watanabe Mutsuo | 1983-12-02 | Tōkyō |
| Defeats Seki Hiroyuki. | ||
| Katsuma Nobuo | 1984-05-03 | Tōkyō |
| Vacates in 85 (85-08-19?). | ||
| Maruo Tadashi | 1985-09-24 | Tōkyō |
| Defeats Nakajima Shun-ichi; Shingaki Satoshi defeats Kawashima Shinobu on 85-10-27 to be recognized as the champion by IBF Japan but vacates the title in 86. | ||
| Katsuma Nobuo [2] | 1986-04-28 | Tōkyō |
| Sugimoto Kōichi | 1986-07-19 | Ōsaka |
| Maruo Tadashi [2] | 1986-10-20 | Tōkyō |
| Hatanaka Kiyoshi | 1987-02-23 | Tōkyō |
| Vacates in 87-08 | ||
| Uchida Yoshiyuki | 1987-09-21 | Tōkyō |
| Defeats Inazuma Jun; vacates on 87-12-22. | ||
| Nakajima Shun-ichi | 1988-03-01 | Tōkyō |
| Defeats Nishikawa Kōji. | ||
| Onizuka Katsuya | 1990-10-15 | Tōkyō |
| Vacates on 91-12-02; wins WBA World Title on 92-04-10. | ||
| Kitazawa Suzuharu | 1992-02-17 | Tōkyō |
| Defeats Morikawa Tomoki; vacates on 92-03-30 due to the retinal detachment. | ||
| Koike Hideki | 1992-04-20 | Tōkyō |
| Defeats Morikawa Tomoki. | ||
| Kawashima Hiroshi | 1992-07-13 | Tōkyō |
| Vacates on 93-12-20; wins WBC World Title on 94-05-04. | ||
| Iida Satoshi | 1994-03-13 | Nagoya |
| Defeats Matsushima Jirō; vacates on 94-12-04. | ||
| Nelson Harada (Nelson Cabig) | 1995-04-18 | Ōsaka |
| Defeats Matsushima Jirō; vacates on 96-06-26. | ||
| Moribe Kōki | 1996-07-20 | Ōsaka |
| Defeats Yasuda Kōji; vacates on 97-02-03. | ||
| Matsukura Yoshiaki | 1997-10-13 | Tōkyō |
| Defeats Taiga Akira. | ||
| Nago Akihiko | 1998-03-09 | Tōkyō |
| Vacates on 98-12-17 to focus on challenging for the world title. | ||
| Ryūkō Kazuhiro | 1999-06-14 | Tōkyō |
| Defeats Matsukura Yoshiaki; vacates on 2001-04-02. | ||
| Kiya Takuya | 2001-04-30 | Shizuoka |
| Defeats Matsukura Yoshiaki. | ||
| Sasaki Shingo | 2001-08-16 | Tōkyō |
| Kawashima Katsushige | 2002-04-20 | Tōkyō |
| Vacates on 03-01-06. | ||
| Prosper Matsuura (Matsuura Kōhei) | 2003-04-22 | Tōkyō |
| Defeats Arinaga Masayuki. | ||
| Kawabata Masaki | 2003-09-06 | Tōkyō |
| Arinaga Masayuki | 2004-06-28 | Tōkyō |
| Tanaka Seiji | 2004-11-27 | Yokohama |
| Nashiro Nobuo | 2005-04-03 | Ōsaka |
| Tanaka falls into coma after the match and passes away on 05-04-15; Nashiro wins the contendership for WBA world title on 05-11-22 and vacates Japanese title on 05-12-07; wins WBA World Title 06-07-22. | ||
| Kikui Teppei | 2006-04-10 | Tōkyō |
| Defeats Aizawa Kuniyuki. | ||
| Kōno Kōhei | 2007-02-12 | Tōkyō |
| Also wins OPBF Title on 07-10-06 but vacates it on 08-05-16; vacates Japanese title on 08-09-25 due to the fist injury. | ||
| Nakahiro Daigo | 2008-12-17 | Tōkyō |
| Satō Yōta | 2010-09-25 | Tōkyō |
| Interim champion since defeating Onaga Gō on 10-05-01; defeats Nakahiro to become the undisputed champion; vacates on 12-01-13; wins WBC World Title on 12-03-27. | ||
| Teiru Kinoshita (Park Tae-Il) | 2012-03-27 | Tōkyō |
| Defeats Onaga Gō; vacates on 14-01-16 to challenge for the world title. | ||
| Tobe Yōhei | 2014-04-14 | Tōkyō |
| Defeats Etō Daiki. | ||
| Ishida Shō | 2014-08-11 | Tōkyō |
| Vacates on 16-07-22 to challenge for the world title. | ||
| Nakagawa Kenta | 2016-10-06 | Tōkyō |
| Defeats Kimura Hayato. | ||
| Funai Ryūichi | 2017-03-22 | Tōkyō |
| Defeats Nakagawa Kenta; vacates on 18-01-11. | ||
| Kudaka Hiroyuki (Hisataka Hiroyuki) | 2018-04-14 | Ōsaka |
| Defeats Onaga Gō. | ||
| Okumoto Takayuki | 2018-08-10 | Ōsaka |
| Nakagawa Kenta [2] | 2019-12-08 | Ōsaka |
| Fukunaga Ryōji | 2020-12-14 | Tōkyō |
| WBO Asia Pacific champion, also wins the vacant OPBF Title; loses his bid for WBO world title on 21-12-31. | ||
| Nakagawa Kenta [3] | 2022-04-23 | Ōsaka |
| Defeats Kudaka Hiroyuki; vacates on 22-10-24. | ||
| Takayama Suzumi | 2023-06-13 | Tōkyō |
| Defeats Kawaura Ryūsei; vacates on 25-03-19 due to health issues. | ||
| Yamaguchi Jin-ya | 2025-04-22 | Tōkyō |
| Defeats Yoshida Kyōtarō. | ||
