*League suspends operations on July 21, 1918.
#Due to Triple A realignment, the American Association disbanded after the 1997 season. Teams in the American Association were assigned to the International or Pacific Coast Leagues.
| American Association Champions |
| Year |
Winner |
| 1902 |
Indianapolis Indians |
| 1903 |
St. Paul Apostles |
| 1904 |
St. Paul Apostles |
| 1905 |
Columbus Senators |
| 1906 |
Columbus Senators |
| 1907 |
Columbus Senators |
| 1908 |
Indianapolis Indians |
| 1909 |
Louisville Colonels |
| 1910 |
Minneapolis Millers |
| 1911 |
Minneapolis Millers |
| 1912 |
Minneapolis Millers |
| 1913 |
Milwaukee Brewers |
| 1914 |
Milwaukee Brewers |
| 1915 |
Minneapolis Millers |
| 1916 |
Louisville Colonels |
| 1917 |
Indianapolis Indians |
| 1918 |
*Kansas City Blues |
| 1919 |
St. Paul Saints |
| 1920 |
St. Paul Saints |
| 1921 |
Louisville Colonels |
| 1922 |
St. Paul Saints |
| 1923 |
Kansas City Blues |
| 1924 |
St. Paul Saints |
| 1925 |
Louisville Colonels |
| 1926 |
Louisville Colonels |
| 1927 |
Toledo Mud Hens |
| 1928 |
Indianapolis Indians |
| 1929 |
Kansas City Blues |
| 1930 |
Louisville Colonels |
| 1931 |
St. Paul Saints |
| 1932 |
Minneapolis Millers |
| 1933 |
Columbus Red Birds |
| 1934 |
Columbus Red Birds |
| 1935 |
Minneapolis Millers |
| 1936 |
Milwaukee Brewers |
| 1937 |
Columbus Red Birds |
| 1938 |
Kansas City Blues |
| 1939 |
Louisville Colonels |
| 1940 |
Louisville Colonels |
| 1941 |
Columbus Red Birds |
| 1942 |
Columbus Red Birds |
| 1943 |
Columbus Red Birds |
| 1944 |
Louisville Colonels |
| 1945 |
Louisville Colonels |
| 1946 |
Louisville Colonels |
| 1947 |
Milwuakee Brewers |
| 1948 |
St. Paul Saints |
| 1949 |
Indianapolis Indians |
| 1950 |
Columbus Red Birds |
| 1951 |
Milwaukee Brewers |
| 1952 |
Kansas City Blues |
| 1953 |
Kansas City Blues |
| 1954 |
Louisville Colonels |
| 1955 |
Minneapolis Millers |
| 1956 |
Indianapolis Indians |
| 1957 |
Denver Bears |
| 1958 |
Minneapolis Millers |
| 1959 |
Minneapolis Millers |
| 1960 |
Louisville Colonels |
| 1961 |
Louisville Colonels |
| 1962 |
Louisville Colonels |
| 1963 |
No League |
| 1964 |
No League |
| 1965 |
No League |
| 1966 |
No League |
| 1967 |
No League |
| 1968 |
No League |
| 1969 |
Omaha Royals |
| 1970 |
Omaha Royals |
| 1971 |
Denver Bears |
| 1972 |
Evansville Triplets |
| 1973 |
Tulsa Oilers |
| 1974 |
Tulsa Oilers |
| 1975 |
Evansville Triplets |
| 1976 |
Denver Zephyrs |
| 1977 |
Denver Zephyrs |
| 1978 |
Omaha Royals |
| 1979 |
Evansville Triplets |
| 1980 |
Springfield Redbirds |
| 1981 |
Denver Zephyrs |
| 1982 |
Indianapolis Indians |
| 1983 |
Denver Zephyrs |
| 1984 |
Louisville Redbirds |
| 1985 |
Louisville Redbirds |
| 1986 |
Indianapolis Indians |
| 1987 |
Indianapolis Indians |
| 1988 |
Indianapolis Indians |
| 1989 |
Indianapolis Indians |
| 1990 |
Omaha Royals |
| 1991 |
Denver Zephyrs |
| 1992 |
Oklahoma City 89ers |
| 1993 |
Iowa Cubs |
| 1994 |
Indianapolis Indians |
| 1995 |
Louisville Redbirds |
| 1996 |
Oklahoma City 89ers |
| #1997 |
Buffalo Bisons |