List of undisputed world boxing champions
Updated: 5/24/2026, 6:57:26 PM Wikipedia source
This is a list of undisputed champions in professional boxing. Eras that are not listed do not have undisputed champions.
Tables
| Current undisputed champion | |
| Most consecutive title defenses |
· Heavyweight › NYSAC–NBA era (1921–1963)
Jack Dempsey
(awarded inaugural NBA title while holding the NYSAC title)
Jack Dempsey
(awarded inaugural NBA title while holding the NYSAC title)
No.
1
Name
Jack Dempsey
(awarded inaugural NBA title while holding the NYSAC title)
Date
Jan 1921 – 23 Sep 1926
Defenses
3
Gene Tunney
Gene Tunney
No.
2
Name
Gene Tunney
Date
23 Sep 1926 – 31 Jul 1928
Defenses
2
Max Schmeling
(def. Jack Sharkey)
Max Schmeling
(def. Jack Sharkey)
No.
3
Name
Max Schmeling
(def. Jack Sharkey)
Date
12 Jun 1930 – 6 Jan 1931
Defenses
0
Max Schmeling (2)
(reinstated by the NYSAC while holding the NBA title)
Max Schmeling (2)
(reinstated by the NYSAC while holding the NBA title)
No.
4
Name
Max Schmeling (2)
(reinstated by the NYSAC while holding the NBA title)
Date
22 Jan – 21 Jun 1932
Defenses
0
Jack Sharkey
Jack Sharkey
No.
5
Name
Jack Sharkey
Date
21 Jun 1932 – 29 Jun 1933
Defenses
0
Primo Carnera
Primo Carnera
No.
6
Name
Primo Carnera
Date
29 Jun 1933 – 14 Jun 1934
Defenses
2
Max Baer
Max Baer
No.
7
Name
Max Baer
Date
14 Jun 1934 – 13 Jun 1935
Defenses
0
James J. Braddock
James J. Braddock
No.
8
Name
James J. Braddock
Date
13 Jun 1935 – 22 Jun 1937
Defenses
0
Joe Louis
Joe Louis
No.
9
Name
Joe Louis
Date
22 Jun 1937 – 1 Mar 1949
Defenses
26
Ezzard Charles
(def. Joe Louis)
Ezzard Charles
(def. Joe Louis)
No.
10
Name
Ezzard Charles
(def. Joe Louis)
Date
27 Sep 1950 – 18 Jul 1951
Defenses
4
Jersey Joe Walcott
Jersey Joe Walcott
No.
11
Name
Jersey Joe Walcott
Date
18 Jul 1951 – 23 Sep 1952
Defenses
1
Rocky Marciano
Rocky Marciano
No.
12
Name
Rocky Marciano
Date
23 Sep 1952 – 27 Apr 1956
Defenses
6
Floyd Patterson
(def. Archie Moore)
Floyd Patterson
(def. Archie Moore)
No.
13
Name
Floyd Patterson
(def. Archie Moore)
Date
30 Nov 1956 – 26 Jun 1959
Defenses
4
Ingemar Johansson
Ingemar Johansson
No.
14
Name
Ingemar Johansson
Date
26 Jun 1959 – 29 Jun 1960
Defenses
0
Floyd Patterson (2)
Floyd Patterson (2)
No.
15
Name
Floyd Patterson (2)
Date
20 Jun 1960 – 25 Sep 1962
Defenses
2
Sonny Liston
Sonny Liston
No.
16
Name
Sonny Liston
Date
25 Sep 1962 – 22 Jul 1963
Defenses
0
| No. | Name | Date | Defenses |
| 1 | Jack Dempsey (awarded inaugural NBA title while holding the NYSAC title) | Jan 1921 – 23 Sep 1926 | 3 |
| 2 | Gene Tunney | 23 Sep 1926 – 31 Jul 1928 | 2 |
| Tunney retires. | |||
| 3 | Max Schmeling (def. Jack Sharkey) | 12 Jun 1930 – 6 Jan 1931 | 0 |
| Schmeling's undisputed status ended when he was stripped of his NYSAC title for refusing to fight Jack Sharkey. | |||
| 4 | Max Schmeling (2) (reinstated by the NYSAC while holding the NBA title) | 22 Jan – 21 Jun 1932 | 0 |
| 5 | Jack Sharkey | 21 Jun 1932 – 29 Jun 1933 | 0 |
| 6 | Primo Carnera | 29 Jun 1933 – 14 Jun 1934 | 2 |
| 7 | Max Baer | 14 Jun 1934 – 13 Jun 1935 | 0 |
| 8 | James J. Braddock | 13 Jun 1935 – 22 Jun 1937 | 0 |
| 9 | Joe Louis | 22 Jun 1937 – 1 Mar 1949 | 26 |
| Louis retires. | |||
| 10 | Ezzard Charles (def. Joe Louis) | 27 Sep 1950 – 18 Jul 1951 | 4 |
| 11 | Jersey Joe Walcott | 18 Jul 1951 – 23 Sep 1952 | 1 |
| 12 | Rocky Marciano | 23 Sep 1952 – 27 Apr 1956 | 6 |
| Marciano retires. | |||
| 13 | Floyd Patterson (def. Archie Moore) | 30 Nov 1956 – 26 Jun 1959 | 4 |
| 14 | Ingemar Johansson | 26 Jun 1959 – 29 Jun 1960 | 0 |
| 15 | Floyd Patterson (2) | 20 Jun 1960 – 25 Sep 1962 | 2 |
| 16 | Sonny Liston | 25 Sep 1962 – 22 Jul 1963 | 0 |
| Era ends because the WBC is inaugurated. Liston would win the inaugural WBC title on his rematch with Floyd Patterson. | |||
· Heavyweight › WBA–WBC era (1963–1983)
Sonny Liston
(def. Floyd Patterson)
Sonny Liston
(def. Floyd Patterson)
No.
1
Name
Sonny Liston
(def. Floyd Patterson)
Date
22 Jul 1963 – 25 Feb 1964
Defenses
0
Muhammad Ali
Muhammad Ali
No.
2
Name
Muhammad Ali
Date
25 Feb – 14 Sep 1964
Defenses
0
Muhammad Ali (2)
(def. Ernie Terrell)
Muhammad Ali (2)
(def. Ernie Terrell)
No.
3
Name
Muhammad Ali (2)
(def. Ernie Terrell)
Date
6 Feb – 28 Apr 1967
Defenses
1
Joe Frazier
(def. Jimmy Ellis)
Joe Frazier
(def. Jimmy Ellis)
No.
4
Name
Joe Frazier
(def. Jimmy Ellis)
Date
16 Feb 1970 – 22 Jan 1973
Defenses
4
George Foreman
George Foreman
No.
5
Name
George Foreman
Date
22 Jan 1973 – 29 Oct 1974
Defenses
2
Muhammad Ali (3)
Muhammad Ali (3)
No.
6
Name
Muhammad Ali (3)
Date
29 Oct 1974 – 15 Feb 1978
Defenses
10
Leon Spinks
Leon Spinks
No.
7
Name
Leon Spinks
Date
15 Feb – 19 Mar 1978
Defenses
0
| No. | Name | Date | Defenses |
| 1 | Sonny Liston (def. Floyd Patterson) | 22 Jul 1963 – 25 Feb 1964 | 0 |
| 2 | Muhammad Ali | 25 Feb – 14 Sep 1964 | 0 |
| Ali's undisputed status ended when he got stripped of his WBA title for agreeing to a rematch against Sonny Liston. | |||
| 3 | Muhammad Ali (2) (def. Ernie Terrell) | 6 Feb – 28 Apr 1967 | 1 |
| Ali got stripped of his titles for refusing to be drafted to military service. | |||
| 4 | Joe Frazier (def. Jimmy Ellis) | 16 Feb 1970 – 22 Jan 1973 | 4 |
| 5 | George Foreman | 22 Jan 1973 – 29 Oct 1974 | 2 |
| 6 | Muhammad Ali (3) | 29 Oct 1974 – 15 Feb 1978 | 10 |
| 7 | Leon Spinks | 15 Feb – 19 Mar 1978 | 0 |
| Spinks' undisputed status ended when he was stripped of the WBC title for pursuing a rematch against Muhammad Ali instead of a bout against mandatory challenger Ken Norton. | |||
· Heavyweight › WBA–WBC–IBF era (1983–2007)
Mike Tyson
(def. Tony Tucker)
Mike Tyson
(def. Tony Tucker)
No.
1
Name
Mike Tyson
(def. Tony Tucker)
Date
1 Aug 1987 – 11 Feb 1990
Defenses
6
Buster Douglas
Buster Douglas
No.
2
Name
Buster Douglas
Date
11 Feb – 25 Oct 1990
Defenses
0
Evander Holyfield
Evander Holyfield
No.
3
Name
Evander Holyfield
Date
25 Oct 1990 – 13 Nov 1992
Defenses
3
Riddick Bowe
Riddick Bowe
No.
4
Name
Riddick Bowe
Date
13 Nov – 14 Dec 1992
Defenses
0
Lennox Lewis
(def. Evander Holyfield)
Lennox Lewis
(def. Evander Holyfield)
No.
5
Name
Lennox Lewis
(def. Evander Holyfield)
Date
13 Nov 1999 – 12 Apr 2000
Defenses
0
| No. | Name | Date | Defenses |
| 1 | Mike Tyson (def. Tony Tucker) | 1 Aug 1987 – 11 Feb 1990 | 6 |
| 2 | Buster Douglas | 11 Feb – 25 Oct 1990 | 0 |
| 3 | Evander Holyfield | 25 Oct 1990 – 13 Nov 1992 | 3 |
| 4 | Riddick Bowe | 13 Nov – 14 Dec 1992 | 0 |
| Bowe's undisputed status ended when he vacated his WBC title and threw the title into the trash. | |||
| 5 | Lennox Lewis (def. Evander Holyfield) | 13 Nov 1999 – 12 Apr 2000 | 0 |
| Lewis' undisputed status ended when he was stripped of his WBA title for agreeing to fight WBC mandatory Michael Grant instead of WBA mandatory John Ruiz. Ruiz challenged this decision in court on the basis of a clause in the Lewis–Holyfield rematch contract which said Lewis' first bout as undisputed champion would be against the WBA's number one c | |||
· Heavyweight › WBA–WBC–IBF–WBO era (2007–present)
Oleksandr Usyk
(def. Tyson Fury)
Oleksandr Usyk
(def. Tyson Fury)
No.
1
Name
Oleksandr Usyk
(def. Tyson Fury)
Date
18 May – 25 Jun 2024
Defenses
0
Oleksandr Usyk (2)
(def. Daniel Dubois)
Oleksandr Usyk (2)
(def. Daniel Dubois)
No.
2
Name
Oleksandr Usyk (2)
(def. Daniel Dubois)
Date
19 Jul – 17 Nov 2025
Defenses
0
| No. | Name | Date | Defenses |
| 1 | Oleksandr Usyk (def. Tyson Fury) | 18 May – 25 Jun 2024 | 0 |
| Usyk's undisputed status ended when he vacated the IBF title after opting to rematch Tyson Fury rather than facing his mandatory challenger Daniel Dubois. | |||
| 2 | Oleksandr Usyk (2) (def. Daniel Dubois) | 19 Jul – 17 Nov 2025 | 0 |
| Usyk's undisputed status ended when he vacated the WBO title. | |||