Who Is the Heavyweight Champion of Boxing in 2025?

By Sarah Miller · December 9, 2045

The current undisputed heavyweight champion of boxing as of October 2025 is Oleksandr Usyk, who holds the WBA (Super), WBC, IBF, WBO, and The Ring titles after defeating Tyson Fury in May 2024. This victory made him the first cruiserweight-turned-heavyweight to unify all major belts.

Who Is the Current Heavyweight Champion in Boxing?

Oleksandr Usyk is the reigning unified heavyweight champion, having captured the WBC title from Tyson Fury in a historic bout on May 18, 2024, in Riyadh, Saudi Arabia. With this win, Usyk became the first man in boxing history to hold all four major world titles—WBA (Super), WBC, IBF, WBO—and The Ring magazine belt in the heavyweight division.

Key Facts About Oleksandr Usyk

Nationality: Ukrainian
Professional Record: 22 wins (13 KOs), 0 losses
Amateur Achievements: Olympic Gold Medalist (2012)
Weight Class Transition: Former undisputed cruiserweight champion
Fighting Style: Orthodox, technically skilled southpaw with elite footwork

Path to Undisputed Heavyweight Glory

Usyk's journey to becoming the undisputed heavyweight champion was both methodical and dramatic. After dominating the cruiserweight division, he moved up to heavyweight in 2019 and quickly established himself as a top contender.

Major Fights En Route to Unification

Anthony Joshua I (2021): Won by split decision, capturing WBA, IBF, WBO, and IBO titles.
Anthony Joshua II (2022): Retained titles via unanimous decision.
Derek Chisora (2023): Dominant TKO victory to maintain mandatory position.
Tyson Fury vs. Derek Chisora III (2023): Fury retained WBC title, setting up unification.
Tyson Fury vs. Oleksandr Usyk (May 2024): Usyk won by majority decision in a grueling 12-round war.

Understanding the Major Boxing Organizations

The heavyweight championship is recognized by several sanctioning bodies, each with its own ranking and title lineage. To be considered "undisputed," a fighter must hold the belts from the four major organizations:

WBA (World Boxing Association) – Oldest organization, founded in 1921.
WBC (World Boxing Council) – Known for its green belt and emphasis on safety.
IBF (International Boxing Federation) – Requires strict adherence to rankings and eliminations.
WBO (World Boxing Organization) – Initially European-based, now globally recognized.
The Ring Magazine Title – Prestigious lineal championship based on merit.

Organization	Current Champion	Title Held Since	Last Defense	Next Mandatory Challenger
WBA (Super)	Oleksandr Usyk	September 25, 2021	vs. Tyson Fury (May 2024)	Adam Kownacki (Rank #1)
WBC	Oleksandr Usyk	May 18, 2024	vs. Tyson Fury (May 2024)	Deontay Wilder (Rank #1)
IBF	Oleksandr Usyk	September 25, 2021	vs. Tyson Fury (May 2024)	Daniel Dubois (Rank #1)
WBO	Oleksandr Usyk	September 25, 2021	vs. Tyson Fury (May 2024)	Joseph Parker (Rank #1)
The Ring	Oleksandr Usyk	May 18, 2024	vs. Tyson Fury (May 2024)	Lineal Champion

Table data source:1, 2, 3, 4, 5

The table confirms that Oleksandr Usyk is the sole holder of all five recognized titles as of October 2025. His unification victory over Tyson Fury marked a turning point in modern heavyweight boxing, ending years of division among the belts. With no active rival holding any portion of the titles, Usyk stands alone at the top of the division.

Historical Context of Undisputed Champions

Before Usyk, the last undisputed heavyweight champion was Lennox Lewis in 2000. The fragmentation of titles over the past two decades made true unification nearly impossible until recent negotiations between promoters and sanctioning bodies improved.

Previous Notable Unified Champions

Lennox Lewis – Unified WBC, IBF, and WBA titles in 2000.
Evander Holyfield – First modern-era undisputed champion (1996).
Mike Tyson – Unified WBC, WBA, and IBF titles in 1987.
Anthony Joshua – Held WBA, IBF, WBO, and IBO titles (2018–2021).

Future of the Heavyweight Division

With Usyk now firmly established as champion, the next chapter involves potential rematch clauses and rising contenders. A second fight with Tyson Fury is contractually obligated, expected in early 2026 unless waived.

Potential Next Challengers

Deontay Wilder – Former WBC champion, aggressive puncher.
Daniel Dubois – IBF mandatory challenger, undefeated with power.
Jarrell Miller – High-profile contender seeking redemption.
Joseph Parker – Experienced former WBO champion.
David Price – Veteran UK fighter with knockout ability.

Frequently Asked Questions About the Heavyweight Champion of Boxing

Who is the current undisputed heavyweight boxing champion?

Oleksandr Usyk is the current undisputed heavyweight champion, holding the WBA, WBC, IBF, WBO, and The Ring titles after defeating Tyson Fury in May 2024.

When did Oleksandr Usyk become heavyweight champion?

Usyk first won heavyweight world titles on September 25, 2021, by defeating Anthony Joshua. He became undisputed champion on May 18, 2024, by defeating Tyson Fury for the WBC belt.

Has any boxer been undisputed champion since Mike Tyson?

No fighter fully unified all four major belts between Tyson’s era (1987) and Oleksandr Usyk (2024). Lennox Lewis came closest in 2000 but did not hold the WBO title at the time.

Why is there more than one heavyweight champion in boxing?

Multiple sanctioning bodies (WBA, WBC, IBF, WBO) operate independently, often recognizing different champions. This leads to title fragmentation unless unification bouts occur.

Will Oleksandr Usyk fight Tyson Fury again?

Yes, a rematch clause exists in their contract. The fight is expected in early 2026 unless mutually waived or delayed due to injury or negotiation issues.