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Last updated on 2025-08-31

Japan
Japan Boxing Commission
Japanese Minimumweight Title

(as of 2025-09-14)

* Bolded letters in the competitor's name, if any, indicate the surname/family name.

Ono Kenji1986-02-10Tōkyō
Defeats Missile Kudō.
Ioka Hiroki1987-07-08Ōsaka
Vacates on 87-09-28; wins WBC World Title on 87-10-18.
Yokozawa Kenji1987-11-29Tōkyō
Vacates in 88-02.
Yogi Yasuo1988-02-25Tōkyō
Missile Kudō (Kudō Masato)1988-06-27Tōkyō
Tokushima Hisashi1988-11-13Ōsaka
Vacates on 88-12-19.
Rocky Lin (Lin Ming-Jia)1990-03-09Tōkyō
Defeats Yogi Yasuo; vacates in 92-09 to focus on challenging for WBC world title.
Hosono Yūichi1992-10-11Tōkyō
Defeats Tamaki Shin-ichi; vacates in 93-04.
Eguchi Kusuo1993-06-05Tōkyō
Defeats Eguchi Katsuaki.
Tamaki Shin-ichi1994-02-05Tōkyō
Vacates on 95-07-06.
Yokoyama Keisuke1995-11-28Tōkyō
Defeats Watanabe Kazumi.
Hoshino Keitarō1996-08-06Tōkyō
Vacates on 98-11-18.
Nakajima Hiroshi1999-01-26Tōkyō
Defeats Matsumoto Hiroshi; vacates in 99-05.
Suzuki Makoto1999-06-29Tōkyō
Defeats Oka Itsuo.
Niida Yutaka2001-01-08Tōkyō
Vacates on 01-06-28 to focus on challenging for WBA world title.
Suzuki Makoto [2]2001-09-10Tōkyō
Defeats Iida Daisuke.
Abe Hiroyuki2002-09-09Tōkyō
Interim champion since defeating Kasamatsu Hiroshi on 02-06-10; defeats Suzuki to become the undisputed champion.
Kogumasaka Satoshi2003-02-10Tōkyō
Takayama Katsunari2006-03-18Tōkyō
Vacates on 06-06-16 to challenge for the world title.
Misawa Teruo2006-12-16Tōkyō
Defeats Kogumasaka Satoshi.
Kuroki Yasutaka2007-05-05Tōkyō
Wins OPBF Title on 08-11-16; vacates Japanese title on 08-12-20.
Kanemitsu Yūji2009-03-21Tōkyō
Defeats Tsuji Masatate; retires on 09-05-12.
Yaegashi Akira2009-06-21Ōsaka
Defeats Horikawa Ken-ichi; vacates in 11-09; wins WBA World Title on 11-10-24.
Mitamura Takuya2011-11-18Tōkyō
Defeats Kunishige Takashi; vacates on 12-07-10 due to health issue.
Hara Ryūji2012-10-02Tōkyō
Defeats Horikawa Ken-ichi; vacates on 13-10-22 to focus on challenging for the world title.
Ōdaira2014-01-17Tōkyō
Defeats Tada Masashi; vcates on 15-09-01 to focus on challenging for the world title.
Fukuhara Tatsuya2015-11-22Kumamoto
Defeats Yamamoto Hiroya; vacates on 16-12-27; wins the interim WBO world title on 17-02-26.
Konishi Reiya2017-04-09Ōsaka
Defeats Taniguchi Masataka; vacates on 18-01-11 to challenge for the world title.
Ono Shin2018-04-22Kōbe
Defeats Hirai Ryōki.
Tanaka Norihito2019-01-12Tōkyō
Vacates on 20-01-10 to challenge for the world title.
Taniguchi Masataka 2020-12-03 Tōkyō
Defeats Sasō Hizuki; wins WBO World Title on 21-12-14.
Ishizawa Kai 2022-01-11 Tōkyō
Defeats Mori Katsuki; vacates on 22-03-01 to focus on challenging for WBO world title.
Shigeoka Ginjirō 2022-03-27 Tomigusuku, Okinawa
Defeats Nakashima Tatsurō; vacates on 22-07-28.
Shigeoka Yūdai 2022-11-17 Tōkyō
Defeats Nakashima Tatsurō; vacates on 22-12-02 to focus on winning world title.
Takada Yuni 2023-04-26 Tōkyō
Defeats Hasebe Shuri; vacates on 24-08-13 in order to focus on winning the world title.
Matsumoto Ryūsei 2024-09-25 Tōkyō
Defeats Mori Katsuki; vacates in 25-08 to focus on winning the world title; wins WBA (Regular) World Title on 25-09-14.

Sources: BoxNews.net, Boxing Senshu Meikan, Boxing News, Wikipedia, various Japanese sports newspaper websites, etc.

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