Youngest World Heavyweight Champions
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Listing of youngest World Heavyweight Champions by age at their first day as champion. The maximum weight for this division is unlimited (200+ lbs, 90.9+ kg, 14 stone 4 lbs+).
RELATED LINKS:
- World Heavyweight Championship Records and Statistics
- Most Opponents Beaten for World Heavyweight Title
- Most Wins in World Heavyweight Title Fights
- Most Opponents Beaten During One World Heavyweight Title Reign
- Most Consecutive World Heavyweight Title Defenses
- Longest Combined World Heavyweight Title Reigns
- Longest Individual World Heavyweight Title Reigns
- Fastest Stoppages in World Heavyweight Title Fights
- Most World Heavyweight Title Bout Wins & Beaten Opponents By Stoppage
- Highest Knockout-To-Win & Knockout-To-Beat-Opponent Percentage in World Heavyweight Title Fights
- Oldest World Heavyweight Champions
- Fastest World Heavyweight Title Wins
All Championship Reigns
| Pos. | Name | Recognition | Date | Age |
|---|---|---|---|---|
| 1. | Mike Tyson | WBC | November 22, 1986 | 20 years, 4 months, 23 days |
| 2. | Floyd Patterson | NBA, NYSAC | November 30, 1956 | 21 years, 10 months, 26 days |
| 3. | Muhammad Ali | WBA, WBC | February 25, 1964 | 22 years, 8 days |
| 4. | Joe Louis | NBA, NYSAC | June 22, 1937 | 23 years, 1 month, 9 days |
| 5. | Jack Dempsey | Lineal | July 4, 1919 | 24 years, 0 months, 10 days |
| 6. | George Foreman | WBA, WBC | February 22, 1973 | 24 years, 0 months, 12 days |
| 7. | Joe Frazier | NYSAC | March 4, 1968 | 24 years, 1 month, 21 days |
| 8. | James J. Jeffries | Lineal | June 9, 1899 | 24 years, 1 month, 25 days |
| 9. | Michael Dokes | WBA | December 10, 1982 | 24 years, 4 months |
| 10. | Wladimir Klitschko | WBO | October 14, 2000 | 24 years, 6 months, 19 days |
Championship Reigns of Undisputed Champions/Lineal Champions/The Ring Champions
The list does not include The Ring and lineal championship fights after 1921, although it only includes title reigns during which the champion captured undisputed championship (1922–present), lineal championship (1885–1921) or The Ring championship (1922–1989, 2002–).
| Pos. | Name | Recognition | Date | Age |
|---|---|---|---|---|
| 1. | Mike Tyson | WBC | November 22, 1986 | 20 years, 4 months, 23 days |
| 2. | Floyd Patterson | NBA, NYSAC | November 30, 1956 | 21 years, 10 months, 26 days |
| 3. | Muhammad Ali | WBA, WBC | February 25, 1964 | 22 years, 8 days |
| 4. | Joe Louis | NBA, NYSAC | June 22, 1937 | 23 years, 1 month, 9 days |
| 5. | Jack Dempsey | Lineal | July 4, 1919 | 24 years, 0 months, 10 days |
| 6. | George Foreman | WBA, WBC | February 22, 1973 | 24 years, 0 months, 12 days |
| 7. | Joe Frazier | NYSAC | March 4, 1968 | 24 years, 1 month, 21 days |
| 8. | James J. Jeffries | Lineal | June 9, 1899 | 24 years, 1 month, 25 days |
| 9. | Leon Spinks | WBA | February 15, 1978 | 24 years, 7 months, 4 days |
| 10. | Tommy Burns | Lineal | January 16, 1902 | 24 years, 8 months, 6 days |