List of current world boxing champions

Since at least John L. Sullivan, in the late 19th century, there have been world boxing champions. The first of today's organizations to award a world title was the World Boxing Association, known as the National Boxing Association when it sanctioned its first title fight in 1921 between Jack Dempsey and Georges Carpentier for the heavyweight championship.

There are now four major sanctioning bodies in professional boxing. The official rules and regulations of the World Boxing Association,World Boxing Council,International Boxing Federation and World Boxing Organization all recognize the other three major sanctioning bodies in their rankings and title unification rules. Each of these organizations sanction and regulate championship bouts and award championships. American boxing magazine The Ring began awarding world championship belts in 1922.

There are seventeen weight divisions. To compete in a weight division, a boxer's weight must not exceed the upper limit. Manny Pacquiao has won world championships in eight different weight divisions, more than any other boxer. The Klitschko brothers, Vitali and Wladimir, held all five major titles in the heavyweight division; they were the first brothers to hold versions of the heavyweight championship at the same time.

List of heavyweight boxing champions

This is a chronological list of world heavyweight boxing champions since the introduction of the Marquess of Queensberry rules in about 1895. It does not include fights fought under Jack Broughton's rules or the London Prize Ring Rules.

Championship recognition

1885–1910

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. Retirements or disputed results could lead to a championship being split among several men for periods of time. With only minor exceptions, the heavyweight division remained free from dual title-holders until the 1960s. For an early example, see the 1896 World Heavyweight Championship.

1910–1961

Organizations that awarded world championships