William Harrison "Jack" Dempsey (June 24, 1895 – May 31, 1983), nicknamed Kid Blackie and The Manassa Mauler, was an American boxer who competed from 1914 to 1927, and was world heavyweight champion from 1919 to 1926. He is ranked sixth on The Ring magazine's list of all-time heavyweights and fourth among its Top 100 Greatest Punchers, while in 1950 the Associated Press voted him as the greatest fighter of the past 50 years.
Dempsey was the inaugural winner of the Edward J. Neil Memorial Plaque in 1938, awarded by the Boxing Writers Association of Greater New York. Dempsey was an inaugural inductee of The Ring magazine Hall of Fame (1954), the World Boxing Hall of Fame (1980), and the International Boxing Hall of Fame (1990). Considered one of the most iconic athletes of his era, Dempsey generated boxing's first million-dollar gate in 1921 against Georges Carpentier ($1,789,238), surpassing his own 1919 record of $452,522.10 set versus Jess Willard. He later drew the sport's first two-million-dollar gate in his 1927 rematch with Gene Tunney.