List of American Association (1902–1997) champions
The American Association was a Minor League Baseball league that operated from 1902 to 1997 (with interruptions during World War I and World War II). This is a list of the teams that won the league championship each year. The championship was typically awarded to the winner of a postseason series between the top teams in the league, although in some years the regular-season champion was declared the league champion.
Champions by Year:
- 1902: Louisville Colonels
- 1903: Louisville Colonels
- 1904: Louisville Colonels
- 1905: Louisville Colonels
- 1906: Indianapolis Indians
- 1907: Columbus Senators
- 1908: Indianapolis Indians
- 1909: Louisville Colonels
- 1910: Louisville Colonels
- 1911: Louisville Colonels
- 1912: Louisville Colonels
- 1913: Indianapolis Indians
- 1914: Indianapolis Indians
- 1915: Minneapolis Millers
- 1916: Louisville Colonels
- 1917: Columbus Senators
- 1918: Season Suspended due to World War I
- 1919: Indianapolis Indians
- 1920: St. Paul Saints
- 1921: Indianapolis Indians
- 1922: Louisville Colonels
- 1923: Louisville Colonels
- 1924: Kansas City Blues
- 1925: Louisville Colonels
- 1926: Louisville Colonels
- 1927: Toledo Mud Hens
- 1928: Kansas City Blues
- 1929: Minneapolis Millers
- 1930: Louisville Colonels
- 1931: St. Paul Saints
- 1932: Toledo Mud Hens
- 1933: Indianapolis Indians
- 1934: Kansas City Blues
- 1935: Minneapolis Millers
- 1936: Milwaukee Brewers
- 1937: Columbus Red Birds
- 1938: Kansas City Blues
- 1939: Columbus Red Birds
- 1940: Indianapolis Indians
- 1941: Louisville Colonels
- 1942: Toronto Maple Leafs
- 1943: Columbus Red Birds
- 1944: Louisville Colonels
- 1945: Louisville Colonels
- 1946: Kansas City Blues
- 1947: Louisville Colonels
- 1948: Indianapolis Indians
- 1949: Indianapolis Indians
- 1950: Indianapolis Indians
- 1951: Milwaukee Brewers
- 1952: Kansas City Blues
- 1953: Indianapolis Indians
- 1954: Minneapolis Millers
- 1955: Omaha Cardinals
- 1956: Denver Bears
- 1957: Omaha Cardinals
- 1958: Indianapolis Indians
- 1959: Indianapolis Indians
- 1960: Louisville Colonels
- 1961: Louisville Colonels
- 1962: Louisville Colonels
- 1963: Indianapolis Indians
- 1964: Oklahoma City 89ers
- 1965: Denver Bears
- 1966: Toronto Maple Leafs
- 1967: Tulsa Oilers
- 1968: Iowa Oaks
- 1969: Iowa Oaks
- 1970: Omaha Royals
- 1971: Denver Bears
- 1972: Denver Bears
- 1973: Tulsa Oilers
- 1974: Tulsa Oilers
- 1975: Indianapolis Indians
- 1976: Denver Bears
- 1977: Denver Bears
- 1978: Indianapolis Indians
- 1979: Evansville Triplets
- 1980: Nashville Sounds
- 1981: Denver Bears
- 1982: Indianapolis Indians
- 1983: Louisville Redbirds
- 1984: Louisville Redbirds
- 1985: Louisville Redbirds
- 1986: Denver Zephyrs
- 1987: Denver Zephyrs
- 1988: Indianapolis Indians
- 1989: Indianapolis Indians
- 1990: Denver Zephyrs
- 1991: Nashville Sounds
- 1992: Nashville Sounds
- 1993: Iowa Cubs
- 1994: Nashville Sounds
- 1995: Louisville Redbirds
- 1996: Iowa Cubs
- 1997: New Orleans Zephyrs
Notes:
- The Louisville Colonels won the most championships (20).
- The league was known by other names during its existence, including the "New" American Association after its revival in 1969.
- Several of the teams listed no longer exist or have moved to different cities and/or leagues.