Following the name of the champion(s): Indicates the number of times the competitor has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
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Title was held or changed hands no later than this. In these cases, it is known that a competitor held the title at a certain time but not when he/she won it.
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Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
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Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the competitor shown should be recognized as a true title holder. These listings are also italicized.
Defeats Lee Sang-ho; stripped of the title in 84-07.
Baek In-chul [2]
1984-07-23
Osan, KOR
Defeats Alberto Bapaimo; stripped of the title in 87-03.
Carlos Elliott
1987-04-02
Tōkyō, JPN
Defeats Yuh Je-hyung.
Francisco Lisboa
1988-07-02
Palembang, INA
Carlos Elliott [2]
1988-12-01
Tōkyō, JPN
Vacates in 91-01.
Jung Young-kil
1991-02-03
Kumho, KOR
Defeats Francisco Lisboa.
Armand Picar
1993-12-25
Ansan, KOR
Loses in WBA world title match on 94-03-04.
Kim Chang-teak
1994-05-14
Gyeongju, KOR
Defeats Jufrison Pontoh.
Ernie Artango
1995-09-06
Seoul, KOR
Vacant in 97.
Song Kook-yul
1997
Interim champion since defeating Kim Chang-teak on 97-06-27 in Busan, KOR; status promoted when Artango vacates the title; Takechi Seiji defeats Song with a reversed decision on 2000-07-23 in Sakaide, Kagawa, JPN; Song continues to protest and is recognized as the official champion while Takechi is recognized as interim champion on 00-08-21.
Ishida Nobuhiro
2001-03-01
Ōsaka, JPN
Takechi Seiji
2001-05-13
Sakaide, Kagawa, JPN
Interim champion, wins unification match; vacant on 01-08-10 when Takechi commits suicide.
Nader Hamdan
2001-10-18
Sydney, NSW, AUS
Defeats Lee Dae-san; vacates in 03-04.
Crazy Kim (Kaneyama Toshiharu)
2003-07-15
Tōkyō, JPN
Defeats Oh Byung-chul; wins OPBF Light Heavyweight Title on 07-07-17; vacates the Super Welterweight Title on 07-07-24.
Wins OPBF and Japanese titles; vacates Japanese title on 11-12 and OPBF title on 14-01-28.
Numata Kōji
2014-08-18
Tōkyō, JPN
Defeats Shimokawara Takehiro; retires on 14-10-19.
Dennis Laurente
2014-12-18
Tōkyō, JPN
Defeats Yuba Tadashi.
Hosokawa Takayuki
2015-11-22
Ōsaka, JPN
Ōishi Yutaka
2016-11-23
Ōsaka, JPN
Ratchasi Sithsaithong (Niwat Kongkan)
2017-04-22
Ōsaka, JPN
Inoue Takeshi
2017-11-10
Tōkyō, JPN
Also wins the vacant WBO Asia Pacific Title; also holds Japanese title but vacates it on 18-01-17; vacates OPBF Title on 18-12-18 ((most likely both titles as he is no longer listed as Asia Pacific champion in the WBO official ranking issued on 19-01-11).
Lee Jung-kyoung
2019-01-19
Seoul, KOR
Defeats Samuel Colomban.
Watanabe Akinori
2019-08-11
Seoul, KOR
Retires on 20-10-14.
Inoue Takeshi [2]
2022-11-05
Tōkyō, JPN
Defeats Tenryū Maruki Ryōsuke and also wins the vacant WBO Asia Pacific Title; retires on 24-12-23.
