List of world cruiserweight boxing champions

Championship recognition

• The World Boxing Association, founded in 1921 as the National Boxing Association,
• The World Boxing Council, founded in 1963,
• The International Boxing Federation, founded in 1983,
• The World Boxing Organization, founded in 1988,

  Footnotes

Cruiserweight champions who won belts in other divisions

• Braxton, Michalczewski, Hill, Adamek and Tiozzo all were light-heavyweight champions.
• Holyfield and Haye are the only former cruiserweight champions to win the heavyweight title with Holyfield earning recognition as undisputed champions in both divisions.
• Toney won titles at middleweight and super middleweight. He also defeated John Ruiz in an attempt to win the heavyweight title but failed a post-fight drug test and the result was changed to a No Decision.