List of American Association (1902–1997) champions

A variety of postseason playoff formats were used over the next 17 seasons before the league disbanded for a final time following the 1997 campaign.

The Louisville Colonels won 15 American Association championships, more than any other team, followed by the Indianapolis Indians (12); the Columbus Red Birds (10); the Minneapolis Millers (9); the St. Paul Saints (8); the Denver Zephyrs (7); the Kansas City Blues (6); the Milwaukee Brewers (5); the Omaha Royals (4); the Evansville Triplets and Louisville Redbirds (3); the Oklahoma City 89ers and Tulsa Oilers (2); and the Buffalo Bisons, Iowa Cubs, Springfield Redbirds, and Toledo Mud Hens (1).

Champions from 1902 to 1932 were simply the regular-season pennant winners—the team with the best win–loss record at the conclusion of the regular championship season.

The first playoff championship was won by the Columbus Red Birds, who defeated the Minneapolis Millers, 4–2, in 1933.

[3] Similar playoffs were held in 1934, but the league returned to recognizing the regular-season pennant winner as champion in 1935.

Some seasons ended with the East and West Division champions facing off in a single round.

[1] The final American Association championship was won by the Buffalo Bisons, who defeated the Iowa Cubs, 3–0.