This is a list of Deep champions at each weight class. Deep is a Japan-based mixed martial arts (MMA) promoting and sanctioning organization.

Current champions Men DivisionChampionSince DefensesMegatonweight Taisei Sekino 1Heavyweight Vacant —Middleweight João Batista Yoshimura 0Welterweight Ibuki Shimada 1Lightweight Shunta Nomura 0 Juri Ohara 1Featherweight Jin Aoi 1 Arata Mizuno 0Bantamweight Ryuya Fukuda 1 Jinnosuke Kashimura 0Flyweight Yutaro Muramoto 1Strawweight Sukai China 0

Women DivisionChampionSince DefensesOpenweight Amanda Lucas 0Atomweight Vacant —Microweight Saori Oshima 1

Men's championship history Megatonweight Championship Weight limit: Unlimited No.NameEventDateReign(total)Defenses 1 Yusuke Kawaguchi Deep: Megaton Grand Prix 2008 Finals August 2, 2008 870 daysKawaguchi vacated the title on December 20, 2010. 2 Kazuhisa Tazawa Deep 52 Impact February 25, 2011 182 days 3 Levan Razmadze Deep 55 Impact August 26, 2011 327 daysRazmadze vacated the title in July 4, 2012. 4 Ken Hasegawa Deep 61 Impact February 16, 2013 970 daysHasegawa vacated the title on October 14, 2015 when he started competing at a lower weight class. 5 Jaideep Singh Deep 73 Impact October 17, 2015 637 days 6 Roque Martinez Deep Cage Impact 2017: At Korakuen Hall July 15, 2017 2,887 days — Ryo Sakai Deep 110 Impact November 12, 2022 –Martinez retired on May 7, 2025. Title was subsequently vacated on June 10, 2025. 7 Taisei Sekino Deep 126 Impact August 17, 2025 (incumbent)

Heavyweight Championship Weight limit: 93 kg (205 lb) No.NameEventDateReign(total)Defenses 1 Deep 47 Impact April 17, 2010 3,248 daysNakanishi vacated the title on March 9, 2019 when he retired.

Middleweight Championship Weight limit: 84 kg (185.2 lb) No.NameEventDateReign(total)Defenses1 Ryuki Ueyama Deep 5 Impact June 9, 2002 914 days2 Ryuta Sakurai Deep 17 Impact December 8, 2004 425 days3 Ryo Chonan Deep 23 Impact February 5, 2006 676 daysChonan vacated the title on December 12, 2007.4 Yuichi Nakanishi Deep 35 Impact May 19, 2008 408 days5 Riki Fukuda Deep: 42 Impact June 30, 2009 738 daysFukuda vacated the title in July 8, 2011 due to being signed with the UFC.6 Kazuhiro Nakamura Deep 61 Impact February 16, 2013 673 days7 Yoshiyuki Nakanishi Deep 70 Impact Decision 20, 2014 296 days8 Choi Young Deep Cage Impact 2015 in Osaka October 11, 2015 ? daysChoi vacated the title in 2016 when he signed with Road FC.9 Tatsuya Mizuno Deep 82 Impact February 24, 2018 1,227 days10 João-Batista Yoshimura Deep 102 Impact July 4, 2021 days(incumbent)

Welterweight Championship Weight limit: 77 kg (169.7 lb) No.NameEventDateReign(total)Defenses1 Jutaro Nakao Deep 16 Impact October 30, 2004 840 days2 Hidehiko Hasegawa Deep 28 Impact February 16, 2007 528 days3 Seichi Ikemoto Deep 36 Impact July 27, 2008 547 days4 Yuya Shirai Deep 45 Impact January 24, 2010 1,189 days5 Dan Hornbuckle Deep 62 Impact April 26, 2013 178 days6 Ryo Chonan Deep - Tribe Tokyo Night October 20, 2013 >1 dayChonan won the title in his retirement fight and retired as champion.7 Yuta Watanabe Deep 66 Impact April 29, 2014 438 days8 Keita Nakamura Deep - Cage Impact 2015 July 20, 2015 ? daysTitle vacant when Nakamura signed with the UFC.9 Ryuichiro Sumimura July 15, 2017 1775 days— Daichi Abe Deep - 100 Impact - 20th Anniversary February 21, 2021 —Sumimura vacated the title in May 25, 2022 following an injury.10 Daichi Abe — May 25, 2022 262 days 11 Shingo Suzuki Deep 112 Impact February 11, 2023 519 days12 Yoichiro Sato Deep 120 Impact July 14, 2024 295 days13 Kohei Kadono Deep 125 Impact May 5, 2025 139 days14 Ibuki Shimada Deep Osaka Impact 2025 4th Round September 21, 2025 days(incumbent)

Lightweight Championship Weight limit: 70 kg (154.3 lb) No.NameEventDateReign(total)Defenses1 Dokonjonosuke Mishima Deep 18 Impact February 12, 2005 ? daysMishima vacated the title in February 2006, as he was unable to defend in the mandatory time period.2 Nobuhiro Obiya Deep 24 Impact April 11, 2006 312 days3 Kazunori Yokota Deep 28 Impact February 16, 2007 459 days4 Bang Seung-hwan Deep 35 Impact May 19, 2008 ? daysBang vacated the title in October 2008.5 Katsunori Kikuno Deep: 41 Impact April 16, 2009 863 days6 Mizuto Hirota Deep 55 Impact August 26, 2011 ? daysHirota vacated the title in April 2012."Deep Lightweight Champion vacated the Title"7 Daisuke Nakamura Deep 58 Impact June 15, 2012 326 days8 Satoru Kitaoka Deep 62 Impact April 26, 2013 2,011 days9 Koji Takeda Deep 86 Impact October 27, 2018 1,235 days— Juri Ohara Deep 102 Impact July 4, 2021 —Takeda vacated the belt on March 15, 2022.10 Juri Ohara — March 15, 2022 552 days 11 Lee Song-ha Deep 115 Impact: Deep Vs. Black Combat 2 September 18, 2023 173 days12 Kimihiro Eto Deep 118 Impact March 9, 2024 191 days13 Shunta Nomura Deep 121 Impact September 16, 2024 days(incumbent)— Juri Ohara Deep 128 Impact November 2, 2025 days(incumbent)

Featherweight Championship Weight limit: 65 kg (143.3 lb) No.NameEventDateReign(total)Defenses1 Masakazu Imanari Deep 22 Impact December 2, 2005 900 days2 Deep 35 Impact May 19, 2008 462 days3 Takafumi Otsuka Deep: 43 Impact August 23, 2009 315 days4 Koichiro Matsumoto Deep 48 Impact July 3, 2010 420 daysMatsumoto retired on August 26, 2011, thereby vacating the title.5 Kazunori Yokota Deep 57 Impact February 18, 2012 ? daysYokota vacated the title in May 2016 when he left to compete for ONE Championship.6 Masakazu Imanari Deep Cage Impact 2016: Deep vs. WSOF-GC December 17, 2016 ? daysImanari vacated the title for unknown reasons.7 Hiroto Uesako Deep Cage Impact 2017: At Korakuen Hall July 15, 2017 162 days8 Takahiro Ashida Deep 81 Impact December 23, 2017 309 days9 Satoshi Yamasu Deep 86 Impact October 27, 2018 695 days10 Juntaro Ushiku Deep 97 Impact September 20, 2020 1189 days— Kouya Kanda Deep 112 Impact February 11, 2023 —Ushiku vacated the title on December 21, 2023, when he started competing at a lower weight class.11 Kouya Kanda — December 21, 2023 79 days12 Jin Aoi Deep 118 Impact March 9, 2024 days(incumbent)— Arata Mizuno Deep 131 Impact: 25th Anniversary May 4, 2026 days(incumbent)

Bantamweight Championship Weight limit: 60 kg (132.3 lb) No.NameEventDateReign(total)Defenses1 Masakazu Imanari Deep 37 Impact August 17, 2008 1,018 daysImanari vacated the title on May 31, 2011.2 Takafumi Otsuka Deep 54 Impact June 24, 2011 240 days3 Yoshiro Maeda Deep 57 Impact February 18, 2012 434 days4 Daiki Hata Deep 62 Impact April 26, 2013 ? daysHata vacated the title.5 Takafumi Otsuka Deep 66 Impact April 29, 2014 ? daysOtsuka vacated the title for unknown reasons.6 Son Jin-soo Deep 83 Impact April 28, 2018 ? daysSon vacated the title in 2018 when he signed with UFC.7 Yuki Motoya Deep 86 Impact October 27, 2018 134 days8 Victor Henry Deep 88 Impact March 9, 2019 1,619 days— Kosuke Terashima Deep 107 Impact May 8, 2022 —— Koichi Ishizuka Deep 110 Impact November 12, 2022 —Henry vacated the title on August 15, 2023 due to being unable to defend his title while signed with UFC.9 Koichi Ishizuka — August 15, 2023 34 days 10 Yoo Soo-young Deep 115 Impact: Deep Vs. Black Combat 2 September 18, 2023 194 daysYoo vacated the title on March 30, 2024.11 Ryuya Fukuda Deep 121 Impact September 16, 2024 days(incumbent)— Jinnosuke Kashimura Deep 131 Impact: 25th Anniversary May 4, 2026 days(incumbent)

Flyweight Championship Weight limit: 56 kg (123.4 lb) No.NameEventDateReign(total)Defenses1 Yuki Motoya Deep Nagoya Impact July 22, 2012 400 days2 Tatsumitsu Wada Deep 63 Impact August 25, 2013 364 days3 Yuki Motoya Deep 68 Impact August 23, 2014 ? daysMotoya vacated the title in April 2016.4 Deep 76 Impact June 26, 2016 1,342 days— Makoto Takahashi Deep 90 Impact June 29, 2019 —Wada vacated the title on February 28, 2020.5 Makoto Takahashi — February 28, 2020 1,490 days— Yamato Fujita Deep 100 Impact - 20th Anniversary February 21, 2021 —— Ryuya Fukuda Deep 113 Impact May 7, 2023 —Takahashi vacated the title on March 29, 2024 to focus on competing in RIZIN.6 Ryuya Fukuda — March 29, 2024 438 daysFukuda vacated the title on June 10, 2025.7 Yutaro Muramoto Deep 126 Impact August 17, 2025 (incumbent)

Strawweight Championship Weight limit: 52 kg (114.6 lb) No.NameEventDateReign(total)Defenses 1 Kanta Sato Deep Cage Impact 2016: Korakuen Hall October 18, 2016 334 days 2 Haruo Ochi Deep 79 Impact September 16, 2017 1,073 days 3 Deep 96 Impact August 23, 2020 1,372 days— Haruo Ochi Deep 117 Impact December 10, 2023 — 4 Haruo Ochi DEEP Tokyo Impact 2024 3rd Round May 26, 2024 567 days 5 Sora Sugiyama DEEP Tokyo Impact 2025 6th Round December 14, 2025 141 days 6 Sukai China DEEP 131 Impact: 25th Anniversary May 4, 2026 days(incumbent)

Women's championship history Women's Openweight Championship No.NameEventDateReign(total)Defenses1 Deep 57 Impact February 18, 2012 3,918 daysWhile the title hasn't been active since 2012 and Lucas isn't competing anymore, Deep never announced the vacancy of the title.

Women's Atomweight Championship Weight limit: 49 kg (105.8 lb) No.NameEventDateReign(total)Defenses1 Hisae Watanabe Deep 25 Impact August 4, 2006 367 days2 Deep 31 Impact August 5, 2007 987 daysMatsumoto vacated the title on April 17, 2010, following her retirement from the sport.

Women's Microweight Championship Weight limit: 45 kg (99.2 lb) No.NameEventDateReign(total)Defenses1 Satoko Shinashi Deep 34 Impact February 22, 2008 3,962 daysShinashi vacated the title in 2018.2 Saori Oshima Deep 97 Impact September 20, 2020 days(incumbent)

Footnotes

See also List of current mixed martial arts champions List of Deep events List of Jewels events List of Jewels champions List of Pancrase champions List of Pride champions List of Road FC champions List of Strikeforce champions List of UFC champions List of WEC champions Mixed martial arts weight classes

References

External links Deep current champions