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IBF · Boxing
No champion on record.
| Champion | Won | Lost | Days |
|---|---|---|---|
| Mairis Briedis | 18 May 2024 | 23 Mar 2026 | 674 |
| Jai Opetaia | 2 Jul 2022 | 18 Dec 2023 | 534 |
| Mairis Briedis | 26 Sept 2020 | 2 Jul 2022 | 644 |
| Yuniel Dorticos | 15 Jun 2019 | 26 Sept 2020 | 469 |
| Oleksandr Usyk | 21 Jul 2018 | 15 Jun 2019 | 329 |
| Murat Gassiev | 3 Dec 2016 | 21 Jul 2018 | 595 |
| Victor Emilio Ramírez | 22 Sept 2015 | 21 May 2016 | 242 |
| Yoan Pablo Hernández | 1 Oct 2011 | 22 Sept 2015 | 1,452 |
| Tomasz Adamek | 11 Dec 2008 | 18 Oct 2009 | 311 |
| Steve Cunningham | 26 May 2007 | 11 Dec 2008 | 565 |
| Krzysztof Włodarczyk | 25 Nov 2006 | 26 May 2007 | 182 |
| O'Neil Bell | 20 May 2005 | 6 Apr 2006 | 321 |
| Kelvin Davis | 1 May 2004 | 9 Feb 2005 | 284 |
| James Toney | 26 Apr 2003 | 11 Feb 2004 | 291 |
| Vassiliy Jirov | 5 Jun 1999 | 26 Apr 2003 | 1,421 |
| Arthur Williams | 30 Oct 1998 | 5 Jun 1999 | 218 |
| Imamu Mayfield | 8 Nov 1997 | 30 Oct 1998 | 356 |
| Adolpho Washington | 31 Aug 1996 | 21 Jun 1997 | 294 |
| Al Cole | 30 Jul 1992 | 1 Aug 1996 | 1,463 |
| Jeff Lampkin | 22 Mar 1990 | 14 Aug 1991 | 510 |
| Glenn McCrory | 3 Jun 1989 | 22 Mar 1990 | 292 |
| Rickey Parkey | 25 Oct 1986 | 15 May 1987 | 202 |
| Lee Roy Murphy | 6 Oct 1984 | 25 Oct 1986 | 749 |
| Marvin Camel | 13 Dec 1983 | 6 Oct 1984 | 298 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.