/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Jaron Ennis | 27 Jun 2026 | Current | 116 |
| Xander Zayas | 26 Jul 2025 | 27 Jun 2026 | 336 |
| Sebastian Fundora | 30 Mar 2024 | 2 May 2025 | 398 |
| Tim Tszyu | 30 Sept 2023 | 30 Mar 2024 | 182 |
| Jermell Charlo | 14 May 2022 | 30 Sept 2023 | 504 |
| Brian Castaño | 13 Feb 2021 | 14 May 2022 | 455 |
| Patrick Teixeira | 4 Dec 2019 | 13 Feb 2021 | 437 |
| Jaime Munguia | 12 May 2018 | 23 Nov 2019 | 560 |
| Sadam Ali | 2 Dec 2017 | 12 May 2018 | 161 |
| Canelo Álvarez | 17 Sept 2016 | 21 May 2017 | 246 |
| Liam Smith | 10 Oct 2015 | 17 Sept 2016 | 343 |
| Demetrius Andrade | 9 Nov 2013 | 31 Jul 2015 | 629 |
| Zaurbek Baysangurov | 5 Oct 2011 | 22 Jul 2013 | 656 |
| Serhiy Dzyndzyruk | 3 Dec 2005 | 5 Oct 2011 | 2,132 |
| Daniel Santos | 16 Mar 2002 | 3 Dec 2005 | 1,358 |
| Harry Simon | 22 Aug 1998 | 27 Nov 2001 | 1,193 |
| Winky Wright | 17 May 1996 | 22 Aug 1998 | 827 |
| Paul Jones | 22 Nov 1995 | 26 Feb 1996 | 96 |
| Verno Phillips | 30 Oct 1993 | 22 Nov 1995 | 753 |
| Chris Pyatt | 23 Oct 1990 | 5 Aug 1993 | 1,017 |
| John David Jackson | 8 Dec 1988 | 17 Feb 1990 | 436 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.
