List of Deep champions
This is a list of DEEP champions at each weight class. DEEP is a Japan-based mixed martial arts promoting and sanctioning organization.
Current Champions
Men's Championship History
Megatonweight
Cruiserweight
| No. | Name | Event | Date | Defenses |
| 1 | Yoshiyuki Nakanishi def. Ryuta Noji | DEEP 47 Impact Tokyo, Japan | April 17, 2010 | 1. def. Bernard Ackah at DEEP 54 Impact on Jun 24, 2011 in Tokyo, Japan 2. def. Yuki Niimura at DEEP 60 Impact on Oct 19, 2012 in Tokyo, Japan 3. def. Shunsuke Inoue at DEEP 66 Impact on Apr 29, 2014 in Tokyo, Japan |
Middleweight
Welterweight
Lightweight
Featherweight
Bantamweight
Flyweight
Strawweight
| No. | Name | Event | Date | Defenses |
| 1 | Kanta Sato def. Sota Kojima | DEEP Cage Impact 2016: Korakuen Hall Tokyo, Japan | October 18, 2016 | |
| 2 | Haruo Ochi | DEEP 79 Impact Tokyo, Japan | September 16, 2017 | 1. def. Yuya Shibata at DEEP Cage Impact in Osaka 2018 on Apr. 8, 2018 in Osaka, Japan 2. def. Namiki Kawahara at DEEP 88 Impact on March 9, 2019 in Tokyo, Japan |
Women's Championship History
Openweight
Lightweight
Flyweight
| No. | Name | Event | Date | Defenses |
| 1 | Satoko Shinashi def. Sachiko Yamamoto | DEEP 34 Impact Bunkyō, Tokyo, Japan | February 22, 2008 |