/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Andrew Moloney | 6 Jun 2026 | Current | 137 |
| Willibaldo Garcia | 23 May 2025 | 6 Jun 2026 | 379 |
| Fernando Martínez | 22 Feb 2022 | 29 Oct 2024 | 980 |
| Jerwin Ancajas | 3 Sept 2016 | 22 Feb 2022 | 1,998 |
| McJoe Arroyo | 18 Jul 2015 | 3 Sept 2016 | 413 |
| Zolani Tete | 18 Jul 2014 | 7 Jun 2015 | 324 |
| Daiki Kameda | 3 Sept 2013 | 19 Mar 2014 | 197 |
| Rodrigo Guerrero | 8 Oct 2011 | 11 Feb 2012 | 126 |
| Cristian Mijares | 11 Dec 2010 | 17 Aug 2011 | 249 |
| Simphiwe Nongqayi | 15 Sept 2009 | 31 Jul 2010 | 319 |
| Vic Darchinyan | 2 Aug 2008 | 28 Jul 2009 | 360 |
| Dimitri Kirilov | 13 Oct 2007 | 2 Aug 2008 | 294 |
| Luis Alberto Pérez | 4 Jan 2003 | 3 Nov 2006 | 1,399 |
| Felix Machado | 22 Jul 2000 | 4 Jan 2003 | 896 |
| Mark Johnson | 24 Apr 1999 | 12 Feb 2000 | 294 |
| Johnny Tapia | 18 Jul 1997 | 22 Dec 1998 | 522 |
| Danny Romero | 24 Aug 1996 | 18 Jul 1997 | 328 |
| Carlos Gabriel Salazar | 7 Oct 1995 | 27 Apr 1996 | 203 |
| Harold Grey | 29 Aug 1994 | 7 Oct 1995 | 404 |
| Julio César Borboa | 16 Jan 1993 | 29 Aug 1994 | 590 |
| Robert Quiroga | 21 Apr 1990 | 16 Jan 1993 | 1,001 |
| Juan Polo Pérez | 14 Oct 1989 | 21 Apr 1990 | 189 |
| Ellyas Pical | 17 Oct 1987 | 14 Oct 1989 | 728 |
| Ellyas Pical | 5 Jul 1986 | 18 Mar 1987 | 256 |
| Ellyas Pical | 3 May 1985 | 15 Feb 1986 | 288 |
| Chun Ju-do | 10 Dec 1983 | 3 May 1985 | 510 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.