The American Association was a minor baseball league in the United States from 1902 to 1962 and 1969 to 1997. Together with the International League, it contested the Little World Series which determined the best team in minor league baseball. In 1997, the American Association disbanded. It's teams either migrated to the east coast based International League or the west coast Pacific Coast League. For most of its existence it was made up of teams from the central part of the US.

Some teams included:

• Minneapolis Millers 1902-60
• St. Paul Saints 1902-60
• Buffalo Bisons
• Denver Bears
• Denver Zephyrs
• Indianapolis Indians
• Iowa Cubs
• Louisville Redbirds now called the Louisville Bats
• Nashville Sounds
• New Orleans Zephyrs
• Oklahoma City 89ers
• Omaha Royals
• Columbus Cardinals

Teams in the AA in 1997

• Buffalo Bisons (1985-97) Moved to International League
• Indianapolis Indians (1902-62, 1969-97) Moved to International League
• Iowa Cubs (1969-97) Moved to Pacific Coast League
• Louisville Redbirds (1902-62, 1982-97) Moved to International League
• Nashville Sounds (1985-97) Moved to Pacific Coast League
• New Orleans Zephyrs (1993-97) Moved to Pacific Coast League (Franchise was located in Denver from 1955-62, 1969-92)
• Oklahoma City 89ers (1962, 1969-97) Moved to Pacific Coast League
• Omaha Royals (1956-59, 1961-62, 1969-97) Moved to Pacific Coast League

Champions (partial list)

• 1990 Omaha
• 1991 Denver
• 1992 Oklahoma City
• 1993 Iowa
• 1994 Indianapolis
• 1995 Louisville
• 1996 Buffalo
• 1997 Buffalo