Boxing champions list as of 2020 June 1st.

With 17 weight classes in boxing and four major sanctioning bodies that bestow world titles, keeping track of who holds each of the belts can be difficult -- especially when there are sometimes multiple titlists in each organization because of interim and secondary belts.

To make it easier for boxing fans, below is a quick reference chart of who holds each of the titles in the four organizations. 

Heavyweight (Unlimited)

WBO: Anthony Joshua

IBF: Anthony Joshua

WBA: Anthony Joshua*

WBC: Tyson Fury**

*Mahmoud Charr is the WBA "regular" heavyweight champion and Trevor Bryan is the WBA interim heavyweight champion

**Dillian Whyte is the WBC interim heavyweight champion

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Cruiserweight (200 lbs.)

WBO: Vacant

IBF: Yunier Dorticos

WBA: Arsen Goulamirian*

WBC: Ilunga Makabu

**Beibut Shumenov is the WBA "regular" cruiserweight champion and Ryad Merhy is the WBA interim cruiserweight champion

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Light heavyweight (175 lbs.)

WBO: Vacant

IBF: Artur Beterbiev

WBA: Dmitry Bivol*

WBC: Artur Beterbiev

*Jean Pascal is the WBA "regular" light heavyweight champion and Dominic Boesel is the WBA interim light heavyweight champion

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Super middleweight (168 lbs.)

WBO: Billy Joe Saunders

IBF: Caleb Plant

WBA: Callum Smith*

WBC: David Benavidez

*Canelo Alvarez is the WBA "regular" super middleweight champion

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Middleweight (160 lbs.)

WBO: Demetrius Andrade

IBF: Gennadiy Golovkin

WBA: Canelo Alvarez*

WBC: Jermall Charlo

*Ryota Murata is the WBA "regular" middleweight champion and Chris Eubank Jr. is the WBA interim middleweight champion

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Junior middleweight (154 lbs.)

WBO: Patrick Teixeira

IBF: Jeison Rosario

WBA: Jeison Rosario*

WBC: Jermell Charlo

*Erislandy Lara is the WBA "regular" junior middleweight champion

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Welterweight (147 lbs.)

WBO: Terence Crawford

IBF: Errol Spence Jr.

WBA: Manny Pacquiao*

WBC: Errol Spence Jr.

*Alexander Besputin is the WBA "regular" welterweight champion

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Junior welterweight (140 lbs.)

WBO: Jose Ramirez

IBF: Josh Taylor

WBA: Josh Taylor*

WBC: Jose Ramirez

*Mario Barrios is the WBA "regular" junior welterweight champion and Alberto Puello is the WBA interim junior welterweight champion

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Lightweight (135 lbs.)

WBO: Vasiliy Lomachenko

IBF: Teofimo Lopez Jr.

WBA: Vasiliy Lomachenko*

WBC: Devin Haney

*Gervonta Davis is the WBA "regular" lightweight champion

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Junior lightweight (130 lbs.)

WBO: Jamel Herring

IBF: Joseph Diaz Jr.

WBA: Leo Santa Cruz*

WBC: Miguel Berchelt

*Rene Alvarado is the WBA "regular" junior lightweight champion and Chris Colbert is the WBA interim junior lightweight champion

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Featherweight (126 lbs.)

WBO: Shakur Stevenson

IBF: Josh Warrington

WBA: Leo Santa Cruz*

WBC: Gary Russell Jr.

*Xu Can is the WBA "regular" featherweight champion

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Junior featherweight (122 lbs.)

WBO: Emanuel Navarrete

IBF: Murodjon Akhmadaliev*

WBA: Murodjon Akhmadaliev**

WBC: Rey Vargas

*Ryosuke Iwasa is the IBF interim junior featherweight champion

**Brandon Figueroa is the WBA "regular" junior featherweight champion

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Bantamweight (118 lbs.)

WBO: John Riel Casimero

IBF: Naoya Inoue

WBA: Naoya Inoue*

WBC: Nordine Oubaali

*Guillermo Rigondeaux is the WBA "regular" bantamweight champion

Junior bantamweight (115 lbs.)

WBO: Kazuto Ioka

IBF: Jerwin Ancajas

WBA: Roman "Chocolatito" Gonzalez*

WBC: Juan Francisco Estrada

*Andrew Moloney is the WBA "regular" junior bantamweight champion

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Flyweight (112 lbs.)

WBO: Vacant

IBF: Moruti Mthalane

WBA: Artem Dalakian*

WBC: Julio Cesar Martinez

*Luis Concepcion is the WBA interim flyweight champion

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Junior flyweight (108 lbs.)

WBO: Elwin Soto

IBF: Felix Alvarado

WBA: Hiroto Kyoguchi*

WBC: Kenshiro Teraji

*Carlos Canizales is the WBA "regular" junior flyweight champion and Daniel Matellon is the WBA interim junior flyweight champion.

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Strawweight (105 lbs.)

WBO: Wilfredo Mendez

IBF: Pedro Taduran

WBA: Knockout CP Freshmart

WBC: Wanheng Menayothin