Baltimore Orioles franchise seasons
125 available seasons. Historical team names follow each season's source article.
- 2025 Baltimore Orioles — 70 roster players
- 2024 Baltimore Orioles — 60 roster players
- 2023 Baltimore Orioles — 50 roster players
- 2022 Baltimore Orioles — 58 roster players
- 2021 Baltimore Orioles — 62 roster players
- 2020 Baltimore Orioles — 45 roster players
- 2019 Baltimore Orioles — 57 roster players
- 2018 Baltimore Orioles — 56 roster players
- 2017 Baltimore Orioles — 50 roster players
- 2016 Baltimore Orioles — 47 roster players
- 2015 Baltimore Orioles — 48 roster players
- 2014 Baltimore Orioles — 44 roster players
- 2013 Baltimore Orioles — 52 roster players
- 2012 Baltimore Orioles — 52 roster players
- 2011 Baltimore Orioles — 50 roster players
- 2010 Baltimore Orioles — 44 roster players
- 2009 Baltimore Orioles — 47 roster players
- 2008 Baltimore Orioles — 46 roster players
- 2007 Baltimore Orioles — 47 roster players
- 2006 Baltimore Orioles — 45 roster players
- 2005 Baltimore Orioles — 46 roster players
- 2004 Baltimore Orioles — 47 roster players
- 2003 Baltimore Orioles — 42 roster players
- 2002 Baltimore Orioles — 45 roster players
- 2001 Baltimore Orioles — 46 roster players
- 2000 Baltimore Orioles — 50 roster players
- 1999 Baltimore Orioles — 43 roster players
- 1998 Baltimore Orioles — 48 roster players
- 1997 Baltimore Orioles — 39 roster players
- 1996 Baltimore Orioles — 45 roster players
- 1995 Baltimore Orioles — 46 roster players
- 1994 Baltimore Orioles — 32 roster players
- 1993 Baltimore Orioles — 40 roster players
- 1992 Baltimore Orioles — 38 roster players
- 1991 Baltimore Orioles — 42 roster players
- 1990 Baltimore Orioles — 47 roster players
- 1989 Baltimore Orioles — 40 roster players
- 1988 Baltimore Orioles — 43 roster players
- 1987 Baltimore Orioles — 40 roster players
- 1986 Baltimore Orioles — 41 roster players
- 1985 Baltimore Orioles — 38 roster players
- 1984 Baltimore Orioles — 37 roster players
- 1983 Baltimore Orioles — 37 roster players
- 1982 Baltimore Orioles — 34 roster players
- 1981 Baltimore Orioles — 34 roster players
- 1980 Baltimore Orioles — 34 roster players
- 1979 Baltimore Orioles — 34 roster players
- 1978 Baltimore Orioles — 33 roster players
- 1977 Baltimore Orioles — 38 roster players
- 1976 Baltimore Orioles — 37 roster players
- 1975 Baltimore Orioles — 34 roster players
- 1974 Baltimore Orioles — 32 roster players
- 1973 Baltimore Orioles — 33 roster players
- 1972 Baltimore Orioles — 32 roster players
- 1971 Baltimore Orioles — 31 roster players
- 1970 Baltimore Orioles — 32 roster players
- 1969 Baltimore Orioles — 30 roster players
- 1968 Baltimore Orioles — 33 roster players
- 1967 Baltimore Orioles — 41 roster players
- 1966 Baltimore Orioles — 34 roster players
- 1965 Baltimore Orioles — 34 roster players
- 1964 Baltimore Orioles — 37 roster players
- 1963 Baltimore Orioles — 34 roster players
- 1962 Baltimore Orioles — 42 roster players
- 1961 Baltimore Orioles — 36 roster players
- 1960 Baltimore Orioles — 41 roster players
- 1959 Baltimore Orioles — 41 roster players
- 1958 Baltimore Orioles — 38 roster players
- 1957 Baltimore Orioles — 43 roster players
- 1956 Baltimore Orioles — 48 roster players
- 1955 Baltimore Orioles — 54 roster players
- 1954 Baltimore Orioles — 38 roster players
- 1953 St. Louis Browns — 38 roster players
- 1952 St. Louis Browns — 48 roster players
- 1951 St. Louis Browns — 51 roster players
- 1950 St. Louis Browns — 36 roster players
- 1949 St. Louis Browns — 37 roster players
- 1948 St. Louis Browns — 37 roster players
- 1947 St. Louis Browns — 31 roster players
- 1946 St. Louis Browns — 44 roster players
- 1945 St. Louis Browns — 31 roster players
- 1944 St. Louis Browns — 33 roster players
- 1943 St. Louis Browns — 37 roster players
- 1942 St. Louis Browns — 35 roster players
- 1941 St. Louis Browns — 35 roster players
- 1940 St. Louis Browns — 32 roster players
- 1939 St. Louis Browns — 45 roster players
- 1938 St. Louis Browns — 36 roster players
- 1937 St. Louis Browns — 40 roster players
- 1936 St. Louis Browns — 28 roster players
- 1935 St. Louis Browns — 34 roster players
- 1934 St. Louis Browns — 28 roster players
- 1933 St. Louis Browns — 27 roster players
- 1932 St. Louis Browns — 29 roster players
- 1931 St. Louis Browns — 31 roster players
- 1930 St. Louis Browns — 31 roster players
- 1929 St. Louis Browns — 30 roster players
- 1928 St. Louis Browns — 31 roster players
- 1927 St. Louis Browns — 30 roster players
- 1926 St. Louis Browns — 28 roster players
- 1925 St. Louis Browns — 29 roster players
- 1924 St. Louis Browns — 33 roster players
- 1923 St. Louis Browns — 33 roster players
- 1922 St. Louis Browns — 26 roster players
- 1921 St. Louis Browns — 34 roster players
- 1920 St. Louis Browns — 37 roster players
- 1919 St. Louis Browns — 32 roster players
- 1918 St. Louis Browns — 26 roster players
- 1917 St. Louis Browns — 40 roster players
- 1916 St. Louis Browns — 32 roster players
- 1915 St. Louis Browns — 46 roster players
- 1914 St. Louis Browns — 38 roster players
- 1913 St. Louis Browns — 41 roster players
- 1912 St. Louis Browns — 45 roster players
- 1911 St. Louis Browns — 46 roster players
- 1910 St. Louis Browns — 42 roster players
- 1909 St. Louis Browns — 32 roster players
- 1908 St. Louis Browns — 23 roster players
- 1907 St. Louis Browns — 25 roster players
- 1906 St. Louis Browns — 19 roster players
- 1905 St. Louis Browns — 25 roster players
- 1904 St. Louis Browns — 25 roster players
- 1903 St. Louis Browns — 26 roster players
- 1902 St. Louis Browns — 21 roster players
- 1901 Baltimore Orioles — 23 roster players