Champion history[]
| # | Fighter | Reign | Date | Location | Successful defenses |
Notes |
|---|---|---|---|---|---|---|
| 1 | Jérôme Le Banner | 1 | August 22, 2011 | Tokyo, Japan | 5 | Declared first champion, after Josh Barnett pulls out of a tournament final match. |
| 2 | Kazuyuki Fujita | 1 | July 14, 2012 | Osaka, Japan | 4 | |
| 3 | Satoshi Ishii | 1 | December 31, 2013 | Tokyo, Japan | 0 | Inoki Bom-Ba-Ye 2013 |
| 4 | Mirko Cro Cop | 1 | August 23, 2014 | Tokyo, Japan | 1 | |
| Cro Cop was stripped of the title when he signed with the UFC. | ||||||
| 5 | Oli Thompson | 1 | December 31, 2015 | Tokyo, Japan | 0 | Defeated Fernando Rodrigues Jr. to win the IGF World GP 2015 and the vacant title. |