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WBO · Boxing
No champion on record.
| Champion | Won | Lost | Days |
|---|---|---|---|
| Jesse Rodriguez | 19 Jul 2025 | 10 Jun 2026 | 326 |
| Phumelele Cafu | 14 Oct 2024 | 19 Jul 2025 | 278 |
| Kazuto Ioka | 19 Jun 2019 | 15 Feb 2023 | 1,337 |
| Donnie Nietes | 31 Dec 2018 | 28 Feb 2019 | 59 |
| Naoya Inoue | 30 Dec 2014 | 6 Mar 2018 | 1,162 |
| Fernando Montiel | 9 Apr 2005 | 10 Feb 2009 | 1,403 |
| Ivan Hernández | 25 Sept 2004 | 9 Apr 2005 | 196 |
| Mark Johnson | 16 Aug 2003 | 25 Sept 2004 | 406 |
| Fernando Montiel | 22 Jun 2002 | 16 Aug 2003 | 420 |
| Pedro Alcázar | 16 Jun 2001 | 22 Jun 2002 | 371 |
| Adonis Rivas | 20 Nov 1999 | 16 Jun 2001 | 574 |
| Johnny Bredahl | 4 Sept 1992 | 16 Jul 1994 | 680 |
| José Ruíz Matos | 29 Apr 1989 | 22 Feb 1992 | 1,029 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.