List of Heavyweight Boxing Champions
| Boxer | From | To | Country |
|---|---|---|---|
| Jack Dempsey | 07/24/1922 | 09/23/1926 | US |
| Gene Tunney | 09/23/1926 | 07/31/1928 | US |
| Max Schmeling | 06/12/1930 | 01/07/1931 | DE |
| James J. Braddock | 06/13/1935 | 06/22/1937 | US |
| Joe Louis | 06/22/1937 | 03/01/1949 | US |
| Ezzard Charles | 09/27/1950 | 07/18/1951 | US |
| Jersey Joe Walcott | 07/18/1951 | 09/23/1952 | US |
| Rocky Marciano | 09/23/1952 | 04/27/1956 | US |
| Floyd Patterson | 11/30/1956 | 06/26/1959 | US |
| Ingemar Johansson | 06/26/1959 | 06/20/1960 | SE |
| Sonny Liston | 09/25/1962 | 02/25/1964 | US |
| Muhammad Ali (as Cassius Clay) | 02/25/1964 | 09/19/1964 | US |
| Muhammad Ali | 02/06/1967 | 04/28/1967 | US |
| Joe Frazier | 02/16/1970 | 01/22/1973 | US |
| George Foreman | 01/22/1973 | 10/30/1974 | US |
| Leon Spinks | 02/15/1978 | 03/18/1978 | US |
| Mike Tyson | 08/01/1987 | 02/11/1990 | US |
| James "Buster" Douglas | 02/11/1990 | 10/25/1990 | US |
| Evander Holyfield | 10/25/1990 | 11/13/1992 | US |
| Riddick Bowe | 11/13/1992 | 12/14/1992 | US |
| Lennox Lewis | 11/13/1999 | 04/29/2000 | GB |