There are 17 weight classes in professional boxing, and five major recognised belts for each of the divisions: The WBA (World Boxing Association), WBC (World Boxing Council), IBF (International Boxing Federation), WBO (World Boxing Organization) and The Ring.
There are four recognised major bodies in boxing, the WBA, WBC, IBF and the WBO. The Ring title is awarded by American boxing magazine, The Ring, and has been done since 1922.
The mixture of belts and champions means that there is only a rare occasion when a class can be fully unified to produce an undisputed champion.
Boxers often fight across weight classes in order to maximise their chances of success, and Manny Pacquiao is currently the only fighter to have won titles in eight divisions.
Here is every champion in each of boxing's weight class.
Heavyweight
- WBA: Oleksandr Usyk (Super) / Kubrat Pulev (Regular)
- WBC: Oleksandr Usyk
- IBF: Daniel Dubois
- WBO: Oleksandr Usyk / Joseph Parker (Interim)
- The Ring: Oleksandr Usyk
Bridgerweight
- WBA: Muslim Gadzhimagomedov
- WBC: Lawrence Okolie
Cruiserweight
- WBA: Gilberto Ramirez (Super)
- WBC: Badou Jack
- IBF: Jai Opetaia
- WBO: Gilberto Ramirez
- The Ring: Jai Opetaia
Light heavyweight
- WBA: Artur Beterbiev (Super) / David Morrel (Regular)
- WBC: Artur Beterbiev / David Benadivez (Interim)
- IBF: Artur Beterbiev
- WBO: Artur Beterbiev / Joshua Buatsi (Interim)
- The Ring: Artur Beterbiev
Super middleweight
- WBA: Canelo Alvarez (Super) / Caleb Plant (Interim)
- WBC: Canelo Alvarez
- IBF: William Scull
- WBO: Canelo Alvarez
- The Ring: Canelo Alvarez
Middleweight
- WBA: Erislandry Lara
- WBC: Carlos Adames
- IBF: Janibek Alimkhanuly
- WBO: Janibek Alimkhanuly
- The Ring: Vacant
Super welterweight/Junior middleweight
- WBA: Terence Crawford
- WBC: Sebastian Fundora / Vergil Ortiz Jr. (Interim)
- IBF: Bakhram Murtazaliev
- WBO: Sebastian Fundora / Terence Crawford (Interim)
- The Ring: Vacant
Welterweight
- WBA: Eimantas Stanionis
- WBC: Mario Barrios
- IBF: Jaron Ennis
- WBO: Brian Norman Jr.
- The Ring: Vacant
Super lightweight/Junior welterweight
- WBA: Jose Valenzuela
- WBC: Alberto Puello
- IBF: Richardson Hitchins
- WBO: Teofimo Lopez
- The Ring: Teofimo Lopez
Lightweight
- WBA: Gervonta Davis
- WBC: Shakur Stevenson / William Zepeda (Interim)
- IBF: Vasiliy Lomachenko
- WBO: Denys Berinchyk
- The Ring: Vacant
Super featherweight/Junior lightweight
- WBA: Lamont Roach Jr. / Albert Batyrgaziev (Interim)
- WBC: O'Shaquie Foster
- IBF: Anthony Cacace
- WBO: Emanuel Navarrete
- The Ring: Vacant
Featherweight
- WBA: Nick Ball
- WBC: Brendan Figueroa
- IBF: Angelo Leo
- WBO: Rafael Espinoza
- The Ring: Vacant
Super bantamweight/Junior featherweight
- WBA: Naoya Inoue / Murodjon Akhmadaliev (Interim)
- WBC: Naoya Inoue
- IBF: Naoya Inoue
- WBO: Naoya Inoue
- The Ring: Naoya Inoue
Bantamweight
- WBA: Seiya Tsutsumi / Antonio Vargas (Interim)
- WBC: Junto Nakatani
- IBF: Ryosuke Nishida
- WBO: Yoshiki Takei
- The Ring: Vacant
Super flyweight/Junior bantamweight
- WBA: Fernando Martinez / David Jimenez (Interim)
- WBC: Jesse Rodriguez
- IBF: Vacant
- WBO: Phumele Cafu
- The Ring: Jesse Rodriguez
Flyweight
- WBA: Seigo Yuri Akui
- WBC: Kenshiro Teraji / Galal Yafai (Interim)
- IBF: Angel Ayala
- WBO: Anthony Olascuaga
- The Ring: Vacant
Light/Junior flyweight
- WBA: Vacant
- WBC: Vacant
- IBF: Masamichi Yabuki
- WBO: Shokichi Iwata
- The Ring: Vacant
Minimumweight/Mini flyweight
- WBA: Oscar Collazo
- WBC: Melvin Jerusalem
- IBF: Pedro Taduran
- WBO: Oscar Collazo
- The Ring: Oscar Collazo
You can read more on how the world championship system works in boxing here.
More Boxing
- Boxing full schedule and calendar
- DAZN's upcoming Boxing shows
- Boxing rankings
- Boxing champions list in every division
- Fighter profiles and highlights
- How do weight classes work?
- What are the major boxing titles?
- How is boxing scored?