/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Pedro Taduran | 28 Jul 2024 | Current | 815 |
| Ginjiro Shigeoka | 7 Oct 2023 | 28 Jul 2024 | 295 |
| Daniel Valladares | 1 Jul 2022 | 7 Oct 2023 | 463 |
| Rene Mark Cuarto | 27 Feb 2021 | 1 Jul 2022 | 489 |
| Pedro Taduran | 7 Sept 2019 | 27 Feb 2021 | 539 |
| Carlos Licona | 1 Dec 2018 | 16 Feb 2019 | 77 |
| Hiroto Kyoguchi | 23 Jul 2017 | 11 Aug 2018 | 384 |
| Jose Argumedo | 31 Dec 2015 | 23 Jul 2017 | 570 |
| Katsunari Takayama | 31 Dec 2014 | 31 Dec 2015 | 365 |
| Katsunari Takayama | 30 Mar 2013 | 9 Aug 2014 | 497 |
| Mario Rodríguez | 1 Sept 2012 | 30 Mar 2013 | 210 |
| Nkosinathi Joyi | 26 Mar 2010 | 1 Sept 2012 | 890 |
| Raúl García | 14 Jun 2008 | 26 Mar 2010 | 650 |
| Florante Condes | 7 Jul 2007 | 14 Jun 2008 | 343 |
| Muhammad Rachman | 14 Sept 2004 | 7 Jul 2007 | 1,026 |
| Miguel Barrera | 9 Aug 2002 | 31 May 2003 | 295 |
| Roberto Carlos Leyva | 29 Apr 2001 | 9 Aug 2002 | 467 |
| Zolani Petelo | 27 Dec 1997 | 2 Nov 2000 | 1,041 |
| Ratanapol Sor Vorapin | 18 May 1996 | 27 Dec 1997 | 588 |
| Ratanapol Sor Vorapin | 10 Dec 1992 | 15 Mar 1996 | 1,191 |
| Fahlan Sakkreerin | 22 Feb 1990 | 6 Sept 1992 | 927 |
| Eric Chavez | 21 Sept 1989 | 22 Feb 1990 | 154 |
| Samuth Sithnaruepol | 24 Mar 1988 | 17 Jun 1989 | 450 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.
