- Professional Combat Sport Championship Histories -
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| Ebihara Hiroyuki | 1963-09-18 | Tōkyō, JPN |
| Defeats WBA champion Pone Kingpetch and is also recognized by WBC. | ||
| Pone Kingpetch | 1964-01-23 | Tōkyō, JPN |
| Salvatore Burruni | 1965-04-23 | Rome, ITA |
| Stripped of the title on 65-11-18. | ||
| Horacio Accavallo | 1966-03-01 | Tōkyō, JPN |
| Defeats Takayama Katsuyoshi; vacant on 68-10-02 upon retirement. | ||
| Chartchai Chionoi | 1968-11-10 | Bangkok, THA |
| Defeats Bernabe Villacampo. | ||
| Efren Torres | 1969-02-23 | Mexico City, DF, MEX |
| Chartchai Chionoi [2] | 1970-03-20 | Bangkok, THA |
| Erbito Salavarria | 1970-12-07 | Bangkok, THA |
| Stripped of the title on 71-12-29. | ||
| Betulio González | 1972-06-03 | Caracas, VEN |
| Defeats Socrates Batoto. | ||
| Venice Borkhorsor | 1972-09-29 | Bangkok, THA |
| Vacant in 73. | ||
| Betulio González [2] | 1973-08-04 | Maracaibo, VEN |
| Defeats Miguel Canto. | ||
| Ōguma Shōji | 1974-10-01 | Tōkyō, JPN |
| Miguel Canto | 1975-01-08 | Sendai, JPN |
| Park Chan-hee | 1979-03-18 | Busan, KOR |
| Ōguma Shōji [2] | 1980-05-18 | Seoul, KOR |
| Antonio Avelar | 1981-05-12 | Mito, JPN |
| Prudencio Cardona | 1982-03-20 | Tampico, TA, MEX |
| Freddy Castillo | 1982-07-24 | Merida, YU, MEX |
| Eleoncio Mercedes | 1982-11-06 | Los Angeles, CA, USA |
| Charlie Magri | 1983-03-15 | London, ENG, GBR |
| Frank Cedeno | 1983-09-27 | London, ENG, GBR |
| Kobayashi Kōji | 1984-01-18 | Nagoya, JPN |
| Gabriel Bernal | 1984-04-09 | Tōkyō, JPN |
| Sot Chitalada | 1984-10-08 | Bangkok, THA |
| Kim Yong-kang | 1988-07-24 | Pohang, KOR |
| Sot Chitalada [2] | 1989-06-03 | Trang, THA |
| Muangchai Kittikasem | 1991-02-15 | Ayuthaya, THA |
| Yuri Arbachakov | 1993-06-23 | Tōkyō, JPN |
| Chatchai Sasakul | 1997-11-12 | Sapporo, JPN |
| Manny Pacquiao | 1998-12-04 | Bangkok, THA |
| Medgoen 3k-Battery (Medgoen Singsurat) | 1999-09-17 | Nakhon Si Thammarat, THA |
| Pacquiao is overweight and loses the title on the scales. | ||
| Malcolm Tuñacao | 2000-05-19 | Udon Thani, THA |
| Pongsaklek Wonjongkam | 2001-03-02 | Pichit, THA |
| Naitō Daisuke | 2007-07-18 | Tōkyō, JPN |
| Kameda Kōki | 2009-11-29 | Saitama, JPN |
| Pongsaklek Wonjongkam [2] | 2010-03-27 | Tōkyō, JPN |
| Sonny Boy Jaro | 2010-03-27 | Chanburi, THA |
| Igarashi Toshiyuki | 2012-07-16 | Kasukabe, Saitama, JPN |
| Yaegashi Akira | 2013-04-08 | Tōkyō, JPN |
| Román González | 2014-09-05 | Tōkyō, JPN |
| Vacates on 16-09-29. | ||
| Juan Hernández Navarrete | 2017-03-04 | Bangkok, THA |
| Defeats Nawaphon Kaikanha. | ||
| Higa Daigo | 2017-05-20 | Tōkyō, JPN |
| Stripped of the title on 18-04-14. | ||
| Cristofer Rosales | 2018-04-15 | Yokohama, JPN |
| Defeats Higa Daigo. | ||
| Charlie Edwards | 2018-12-22 | London, ENG, GBR |
| Vacates on 19-10-05 for not being able to maintain the weight limit. | ||
| Julio Cesar Martinez | 2019-12-20 | Phoenix, AZ, USA |
| Defeats Cristofer Rosales; vacates on 24-05-22 upon moving up to the super flyweight class (WBC official website). | ||
| Teraji Kenshirō | 2024-10-13 | Tōkyō, JPN |
| Defeats Cristofer Rosales; also wins WBA world title on 25-03-13. | ||
| Ricardo Sandoval | 2025-07-30 | Yokohama, JPN |
| Wins WBC and WBA world titles. | ||
