World heavyweight boxing championship records and statistics

As per International Boxing Hall Of Fame:[1][2][3][4][5] Gradually, the role of recognizing champions in the division evolved into a more formal affair, with public acclamation being supplemented (or in some cases, contradicted) by recognition by one or more athletic commissions, sanctioning organizations, or a combination of them.

The International Boxing Hall of Fame (IBHOF) recognizes these organizations as major in boxing: There are also titles that are not considered major, but play a significant role in legitimizing the heavyweight champion: Keys: 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.

For the purpose of this list, successful title defenses that ended in a draw are also included.

Ranked by the time elapsed between professional debut and world heavyweight title win.

Ranked by the number of bouts boxer fought at the professional level before winning world heavyweight title.

For the purpose of this list, successful title defenses that ended in a draw are also included.

For the purpose of this list, successful title defenses that ended in a draw are also included.