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| Champion | Won | Lost | Days |
|---|---|---|---|
| Oscar Collazo | 27 May 2023 | Current | 1,243 |
| Masataka Taniguchi | 14 Dec 2021 | 6 Jan 2023 | 388 |
| Wilfredo Mendez | 24 Aug 2019 | 14 Dec 2021 | 843 |
| Vic Saludar | 13 Jul 2018 | 24 Aug 2019 | 407 |
| Ryuya Yamanaka | 27 Aug 2017 | 13 Jul 2018 | 320 |
| Riku Kano | 20 Aug 2016 | 3 Apr 2017 | 226 |
| Kosei Tanaka | 30 May 2015 | 7 Apr 2016 | 313 |
| Katsunari Takayama | 31 Dec 2014 | 3 Mar 2015 | 62 |
| Merlito Sabillo | 19 Apr 2013 | 22 Mar 2014 | 337 |
| Moisés Fuentes | 27 Aug 2011 | 19 Apr 2013 | 601 |
| Donnie Nietes | 30 Sept 2007 | 28 Feb 2011 | 1,247 |
| Iván Calderón | 3 May 2003 | 25 Aug 2007 | 1,575 |
| Eric Jamili | 19 Dec 1997 | 30 May 1998 | 162 |
| Alex Sánchez | 22 Dec 1993 | 23 Aug 1997 | 1,340 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.