/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Masamichi Yabuki | 29 Mar 2025 | Current | 572 |
| Angel Ayala | 9 Aug 2024 | 29 Mar 2025 | 232 |
| Jesse Rodriguez | 16 Dec 2023 | 27 Mar 2024 | 102 |
| Sunny Edwards | 30 Apr 2021 | 16 Dec 2023 | 960 |
| Muhammad Waseem | 15 Jul 2018 | 30 Apr 2021 | 1,020 |
| Donnie Nietes | 29 Apr 2017 | 11 Apr 2018 | 347 |
| Amnat Ruenroeng | 22 Jan 2014 | 28 May 2016 | 857 |
| Moruti Mthalane | 20 Nov 2009 | 13 Jan 2014 | 1,515 |
| Nonito Donaire | 7 Jul 2007 | 14 Jul 2009 | 738 |
| Vic Darchinyan | 16 Dec 2004 | 7 Jul 2007 | 933 |
| Irene Pacheco | 10 Apr 1999 | 16 Dec 2004 | 2,077 |
| Danny Romero | 22 Apr 1995 | 1 Jan 1996 | 254 |
| Pichit Sitbangprachan | 29 Nov 1992 | 25 Nov 1994 | 726 |
| Dave McAuley | 7 Jun 1989 | 11 Jun 1992 | 1,100 |
| Duke McKenzie | 5 Oct 1988 | 7 Jun 1989 | 245 |
| Choi Chang-ho | 5 Sept 1987 | 16 Jan 1988 | 133 |
| Shin Hi-sup | 2 Aug 1986 | 22 Feb 1987 | 204 |
| Chung Jong-kwan | 20 Dec 1985 | 27 Apr 1986 | 128 |
| Kwon Soon-chun | 24 Dec 1983 | 20 Dec 1985 | 727 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.