Maximilian Adolph Otto Siegfried Schmeling (28 September 1905 – 2 February 2005) was a German boxer who was heavyweight champion of the world between 1930 and 1932. His two fights with Joe Louis in 1936 and 1938 were worldwide cultural events because of their national associations.

Schmeling is the only boxer to win the world heavyweight championship on a foul. Starting his professional career in 1924, Schmeling went to the United States in 1928 and, after a ninth-round technical knockout of Johnny Risko, became a sensation. He became the first to win the heavyweight championship (at that time vacant) by disqualification in 1930, after opponent Jack Sharkey knocked him down with a low blow in the fourth round.