/
| Champion | Won | Lost | Days |
|---|---|---|---|
| David Benavidez | 2 May 2026 | Current | 172 |
| Gilberto Ramírez | 16 Nov 2024 | 2 May 2026 | 532 |
| Chris Billam-Smith | 27 May 2023 | 16 Nov 2024 | 539 |
| Lawrence Okolie | 20 Mar 2021 | 27 May 2023 | 798 |
| Oleksandr Usyk | 17 Sept 2016 | 5 Jun 2019 | 991 |
| Krzysztof Głowacki | 14 Aug 2015 | 17 Sept 2016 | 400 |
| Marco Huck | 5 Dec 2009 | 14 Aug 2015 | 2,078 |
| Enzo Maccarinelli | 22 Sept 2006 | 8 Mar 2008 | 533 |
| Johnny Nelson | 27 Mar 1999 | 22 Sept 2006 | 2,736 |
| Carl Thompson | 4 Oct 1997 | 27 Mar 1999 | 539 |
| Ralf Rocchigiani | 10 Jun 1995 | 4 Oct 1997 | 847 |
| Nestor Hipolito Giovannini | 26 Jun 1993 | 17 Dec 1994 | 539 |
| Tyrone Booze | 25 Jul 1992 | 13 Feb 1993 | 203 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.
