List of world cruiserweight boxing champions

This is a chronological list of world cruiserweight boxing champions, as recognized by four of the better-known sanctioning organizations:

Championship recognition

 * The World Boxing Association (WBA), founded in 1921 as the National Boxing Association (NBA),
 * The World Boxing Council (WBC), founded in 1963,
 * The International Boxing Federation (IBF), founded in 1983,
 * The World Boxing Organization (WBO), founded in 1988,

Cruiserweight champions who won belts in other divisions

 * Braxton, Jack, Michalczewski, Hill, Erdei, Adamek, Shumenov and Tiozzo all were light-heavyweight champions.
 * Holyfield, Haye, and Usyk are the only former cruiserweight champions to win the heavyweight title with Holyfield and Usyk 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.
 * Jack won titles at super middleweight.