/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Liam Paro | 24 Jun 2026 | Current | 119 |
| Lewis Crocker | 13 Sept 2025 | 24 Jun 2026 | 284 |
| Jaron Ennis | 9 Nov 2023 | 7 Jul 2025 | 606 |
| Kell Brook | 16 Aug 2014 | 27 May 2017 | 1,015 |
| Shawn Porter | 7 Dec 2013 | 16 Aug 2014 | 252 |
| Devon Alexander | 20 Oct 2012 | 7 Dec 2013 | 413 |
| Joshua Clottey | 2 Aug 2008 | 16 Apr 2009 | 257 |
| Kermit Cintrón | 28 Oct 2006 | 12 Apr 2008 | 532 |
| Zab Judah | 5 Feb 2005 | 8 Apr 2006 | 427 |
| Cory Spinks | 22 Mar 2003 | 5 Feb 2005 | 686 |
| Michele Piccirillo | 13 Apr 2002 | 22 Mar 2003 | 343 |
| Félix Trinidad | 19 Jun 1993 | 10 Mar 2000 | 2,456 |
| Maurice Blocker | 4 Oct 1991 | 19 Jun 1993 | 624 |
| Simon Brown | 23 Apr 1988 | 7 May 1991 | 1,109 |
| Lloyd Honeyghan | 27 Sept 1986 | 28 Oct 1987 | 396 |
| Donald Curry | 4 Feb 1984 | 27 Sept 1986 | 966 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.