Championship recognition
As per1884–1921
* Champions were recognized by public acclamation. A champion in that era was a fighter who had a notable win over another fighter and kept winning afterward. It was aSanctioning organizations: 1921–present
Most opponents beaten in title fights
All championship reigns of undisputed champions/lineal champions/''The Ring'' champions
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Championship reigns of undisputed/lineal/''The Ring'' champions with undisputed/lineal/''The Ring''/unified championships, victories over champions
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship. The list only includes title reigns during which the champion: * has won undisputed championship (July 2, 1921–present), ''The Ring'' championship, lineal championship (August 29, 1885–July 2, 1921) * held at least two major world heavyweight titlesRules governing championship contestsMost wins in title fights
Keys: : Active title reign : Reign has endedAll championship reigns
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921. *Note: Secondary championships are not included.All championship reigns of undisputed champions/lineal champions/''The Ring'' champions
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Championship reigns of undisputed/lineal/''The Ring'' champions with undisputed/lineal/''The Ring''/unified championships, victories over champions
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship. The list only includes title reigns during which the champion: * has won undisputed championship (July 2, 1921–present), ''The Ring'' championship, lineal championship (August 29, 1885–July 2, 1921) * held at least two major world heavyweight titles simultaneously * defeated a fighter that either had to drop his own world title prior to the fight due to organization's championship policy or would become world heavyweight champion while the winner's reign was still active As of , .Most opponents title was successfully defended against during one reign
Keys: : Active title reign : Reign has ended *Note: Secondary championships are not included.All championship reigns
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921.Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Most consecutive title defenses
Keys: : Active title reign : Reign has ended *Note: Secondary championships are not included.All championship reigns
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921. For the purpose of this list, successful title defenses that ended in a draw are also included.Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship. For the purpose of this list, successful title defenses that ended in a draw are also included.Longest title reigns
Keys: : Active Title Reign : Reign has ended *Note: Secondary championships are not included.Combined reigns
All championship reigns
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921. ''As of 17 September 2022''.All championship reigns of undisputed champions/lineal champions/''The Ring'' champions
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship. ''As of 17 September 2022''.Championship reigns of undisputed/lineal/''The Ring'' champions with undisputed/lineal/''The Ring''/unified championships, victories over champions
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship. The list only includes title reigns during which the champion: * has won undisputed championship (July 2, 1921–present), ''The Ring'' championship, lineal championship (August 29, 1885–July 2, 1921) * held at least two major world heavyweight titles simultaneously * defeated a fighter that either had to drop his own world title prior to the fight due to organization's championship policy or would later become world heavyweight champion while the winner's reign was still active ''As of 17 September 2022''.Individual reigns
Below is a list of longest reigning heavyweight champions in boxing measured by the individual's longest reign. Both ''The Ring'' and lineal championships are included. Career total time as champion (for multiple time champions) does not apply.All championship reigns
Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Title fight finishes
Fastest stoppages in title fights — 1st round stoppages
Fastest stoppages in title fights — undisputed/''The Ring''/lineal/unified championship on the line
Most opponents beaten in title fights by stoppage
Keys: : Active title reign : Reign has ended :Note: The names in ''italics'' are champions that did not win undisputed championship (July 2, 1921–present), ''The Ring'' championship or lineal championship (August 29, 1885–July 2, 1921)Most title fight wins by stoppage
Keys: : Active title reign : Reign has ended :Note: The names in ''italics'' are champions that did not win undisputed championship (July 2, 1921–present), ''The Ring'' championship or lineal championship (August 29, 1885–July 2, 1921)Highest knockout-to-beat-opponent percentage in title fights
Keys: : Active title reign : Reign has ended :Note 1: The names in ''italics'' are champions that did not win undisputed championship (July 2, 1921–present), ''The Ring'' championship or lineal championship (August 29, 1885–July 2, 1921) :Note 2: Only fighters who have defeated 5 or more opponents for the world heavyweight title are includedHighest knockout-to-win percentage in title fights
Keys: : Active title reign : Reign has ended :Note 1: The names in ''italics'' are champions that did not win undisputed championship (July 2, 1921–present), ''The Ring'' championship or lineal championship (August 29, 1885–July 2, 1921) :Note 2: Only fighters who have won 5 or more world heavyweight title fights are includedChampions by age
Keys: : Active title reign : Reign has ended *Note: Secondary championships are not included.Oldest champions
As of , . This is the list of the oldest heavyweight champions ordered by age at their last day as champion.All championship reigns
Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Youngest champions
As of , .All championship reigns
Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Fastest world championship wins
By time elapsed from professional debut
Ranked by the time elapsed between professional debut and world heavyweight title win.All championship reigns
Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.By number of bouts fought to win world championship
Ranked by the number of bouts boxer fought at the professional level before winning world heavyweight title.All championship reigns
Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Statistics by non-US country
The list includes world heavyweight boxing champions from outside of theTitle fight wins & beaten opponents
All championship reigns
All championship reigns of undisputed champions/lineal champions/''The Ring'' champions
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes heavyweight champions that captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship.Championship reigns of undisputed/lineal/''The Ring'' champions with undisputed/lineal/''The Ring''/unified championships, victories over champions
The list only includes title reigns during which the champion: * has won undisputed championship (July 2, 1921–present), ''The Ring'' championship, lineal championship (August 29, 1885–July 2, 1921) * held at least two major world heavyweight titles simultaneously * defeated a fighter that either had to drop his own world title prior to the fight due to organization's championship policy or would become world heavyweight champion while the winner's reign was still activeTitle streaks
Only major titles, without The Ring andAll championship reigns
For the purpose of this list, successful title defenses that ended in a draw are also included.Championship reigns with undisputed/lineal/''The Ring'' championships
The list does not include ''The Ring'' and lineal championship fights after July 2, 1921, although it only includes title reigns during which the champion captured undisputed championship (July 2, 1921–present), lineal championship (August 29, 1885–July 2, 1921) or ''The Ring'' championship. For the purpose of this list, successful title defenses that ended in a draw are also included.See also
*Notes
References
External links