Oakland Athletics franchise seasons
124 available seasons. Historical team names follow each season's source article.
- 2024 Oakland Athletics — 55 roster players
- 2023 Oakland Athletics — 62 roster players
- 2022 Oakland Athletics — 65 roster players
- 2021 Oakland Athletics — 51 roster players
- 2020 Oakland Athletics — 38 roster players
- 2019 Oakland Athletics — 49 roster players
- 2018 Oakland Athletics — 53 roster players
- 2017 Oakland Athletics — 54 roster players
- 2016 Oakland Athletics — 51 roster players
- 2015 Oakland Athletics — 53 roster players
- 2014 Oakland Athletics — 45 roster players
- 2013 Oakland Athletics — 44 roster players
- 2012 Oakland Athletics — 50 roster players
- 2011 Oakland Athletics — 48 roster players
- 2010 Oakland Athletics — 49 roster players
- 2009 Oakland Athletics — 51 roster players
- 2008 Oakland Athletics — 50 roster players
- 2007 Oakland Athletics — 54 roster players
- 2006 Oakland Athletics — 40 roster players
- 2005 Oakland Athletics — 41 roster players
- 2004 Oakland Athletics — 36 roster players
- 2003 Oakland Athletics — 41 roster players
- 2002 Oakland Athletics — 41 roster players
- 2001 Oakland Athletics — 42 roster players
- 2000 Oakland Athletics — 44 roster players
- 1999 Oakland Athletics — 42 roster players
- 1998 Oakland Athletics — 45 roster players
- 1997 Oakland Athletics — 49 roster players
- 1996 Oakland Athletics — 43 roster players
- 1995 Oakland Athletics — 44 roster players
- 1994 Oakland Athletics — 43 roster players
- 1993 Oakland Athletics — 43 roster players
- 1992 Oakland Athletics — 44 roster players
- 1991 Oakland Athletics — 45 roster players
- 1990 Oakland Athletics — 40 roster players
- 1989 Oakland Athletics — 41 roster players
- 1988 Oakland Athletics — 35 roster players
- 1987 Oakland Athletics — 45 roster players
- 1986 Oakland Athletics — 44 roster players
- 1985 Oakland Athletics — 36 roster players
- 1984 Oakland Athletics — 37 roster players
- 1983 Oakland Athletics — 43 roster players
- 1982 Oakland Athletics — 43 roster players
- 1981 Oakland Athletics — 40 roster players
- 1980 Oakland Athletics — 34 roster players
- 1979 Oakland Athletics — 33 roster players
- 1978 Oakland Athletics — 46 roster players
- 1977 Oakland Athletics — 40 roster players
- 1976 Oakland Athletics — 38 roster players
- 1975 Oakland Athletics — 42 roster players
- 1974 Oakland Athletics — 36 roster players
- 1973 Oakland Athletics — 40 roster players
- 1972 Oakland Athletics — 47 roster players
- 1971 Oakland Athletics — 40 roster players
- 1970 Oakland Athletics — 39 roster players
- 1969 Oakland Athletics — 40 roster players
- 1968 Oakland Athletics — 34 roster players
- 1967 Kansas City Athletics — 39 roster players
- 1966 Kansas City Athletics — 49 roster players
- 1965 Kansas City Athletics — 44 roster players
- 1964 Kansas City Athletics — 40 roster players
- 1963 Kansas City Athletics — 43 roster players
- 1962 Kansas City Athletics — 45 roster players
- 1961 Kansas City Athletics — 52 roster players
- 1960 Kansas City Athletics — 41 roster players
- 1959 Kansas City Athletics — 43 roster players
- 1958 Kansas City Athletics — 42 roster players
- 1957 Kansas City Athletics — 38 roster players
- 1956 Kansas City Athletics — 44 roster players
- 1955 Kansas City Athletics — 52 roster players
- 1954 Philadelphia Athletics — 38 roster players
- 1953 Philadelphia Athletics — 36 roster players
- 1952 Philadelphia Athletics — 35 roster players
- 1951 Philadelphia Athletics — 34 roster players
- 1950 Philadelphia Athletics — 33 roster players
- 1949 Philadelphia Athletics — 28 roster players
- 1948 Philadelphia Athletics — 31 roster players
- 1947 Philadelphia Athletics — 31 roster players
- 1946 Philadelphia Athletics — 41 roster players
- 1945 Philadelphia Athletics — 37 roster players
- 1944 Philadelphia Athletics — 35 roster players
- 1943 Philadelphia Athletics — 44 roster players
- 1942 Philadelphia Athletics — 38 roster players
- 1941 Philadelphia Athletics — 40 roster players
- 1940 Philadelphia Athletics — 34 roster players
- 1939 Philadelphia Athletics — 39 roster players
- 1938 Philadelphia Athletics — 35 roster players
- 1937 Philadelphia Athletics — 33 roster players
- 1936 Philadelphia Athletics — 39 roster players
- 1935 Philadelphia Athletics — 39 roster players
- 1934 Philadelphia Athletics — 30 roster players
- 1933 Philadelphia Athletics — 31 roster players
- 1932 Philadelphia Athletics — 30 roster players
- 1931 Philadelphia Athletics — 27 roster players
- 1930 Philadelphia Athletics — 30 roster players
- 1929 Philadelphia Athletics — 32 roster players
- 1928 Philadelphia Athletics — 29 roster players
- 1927 Philadelphia Athletics — 34 roster players
- 1926 Philadelphia Athletics — 31 roster players
- 1925 Philadelphia Athletics — 33 roster players
- 1924 Philadelphia Athletics — 30 roster players
- 1923 Philadelphia Athletics — 33 roster players
- 1922 Philadelphia Athletics — 31 roster players
- 1921 Philadelphia Athletics — 36 roster players
- 1920 Philadelphia Athletics — 38 roster players
- 1919 Philadelphia Athletics — 49 roster players
- 1918 Philadelphia Athletics — 28 roster players
- 1917 Philadelphia Athletics — 41 roster players
- 1916 Philadelphia Athletics — 50 roster players
- 1915 Philadelphia Athletics — 56 roster players
- 1914 Philadelphia Athletics — 39 roster players
- 1913 Philadelphia Athletics — 36 roster players
- 1912 Philadelphia Athletics — 35 roster players
- 1911 Philadelphia Athletics — 30 roster players
- 1910 Philadelphia Athletics — 27 roster players
- 1909 Philadelphia Athletics — 31 roster players
- 1908 Philadelphia Athletics — 37 roster players
- 1907 Philadelphia Athletics — 24 roster players
- 1906 Philadelphia Athletics — 29 roster players
- 1905 Philadelphia Athletics — 19 roster players
- 1904 Philadelphia Athletics — 21 roster players
- 1903 Philadelphia Athletics — 22 roster players
- 1902 Philadelphia Athletics — 27 roster players
- 1901 Philadelphia Athletics — 31 roster players