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.
<
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.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
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.
New Japan Kickboxing Federation
Bantamweight Title [53.52kg] (as of 2022-02-06)
* Bolded letters in the competitor's name indicate the surname/family name.
Nakajima Noboru
1996-10-06
Tōkyō
Defeats Kitagawa Ginji to become the first champion.
Kusumoto Katsuya
1997-08-10
Vacates in 98.
Sakurai Yōhei
2000-07-07
Tōkyō
Defeats Nakajima Noboru; vacant in 01-07 when NJKF joins NKB (Nihon Kick Boxing).
Nakano Tomonori
2002-06-29
Tōkyō
Defeats Yamamoto Kyōta to become the first NKB champion; vacates in 03 (sometime after 03-03-09).
Fujiwara Kunitaka
2003-07-06
Tōkyō
Defeats Dōshimaru; vacant in 14-12 when NJKF leaves NKB.
Fujiwara Kunitaka [2]
2015-01
Continues to be recognized by NJKF but as a separate reign.
Yoneda Takashi
2007-03-18
Tōkyō
Vacant in 07-08.
Maeda Hiroki
2007-11-23
Tōkyō
Defeats Kunitaka; vacant on 10-10-01 due to injury.
Kōjirō
2012-10-21
Tōkyō
Defeats Mr. Haga.
Shirai Shūsaku
2013-10-14
Tōkyō
Defeats Rising Kazuharu; stripped of the title on 15-02-14 due to failure to maintain the weight limit for the title match scheduled on the following day.
Maeda Hiroki [2]
2015-02-15
Tōkyō
Defeats Shirai Shūsaku; vacant in 16 (sometime between 16-03-12 and 16-08-10).
Kumura Shūhei
2017-06-18
Tōkyō
Defeats Kusaka Kōdai for the vacant title; vacant in 18(?).
Shun Yamato
2018-06-24
Tōkyō
Defeats Kusaka Kōdai for the vacant title; vacant in 19.
Ikkō (Ōta Ikkō)
2019-11-30
Tōkyō
Defeats Kusaka Kōdai for the vacant title; vacates upon (or after) winning WBC Japan Title on 20-09-12; Kai Gentarō and Shiga Masahiro are scheduled to fight for the vacant title on 21-08-08; Kai is awarded the interim title when Shiga cannot compete due to injury.
