Boston Red Sox franchise seasons
125 available seasons. Historical team names follow each season's source article.
- 2025 Boston Red Sox — 56 roster players
- 2024 Boston Red Sox — 56 roster players
- 2023 Boston Red Sox — 56 roster players
- 2022 Boston Red Sox — 54 roster players
- 2021 Boston Red Sox — 56 roster players
- 2020 Boston Red Sox — 47 roster players
- 2019 Boston Red Sox — 47 roster players
- 2018 Boston Red Sox — 44 roster players
- 2017 Boston Red Sox — 49 roster players
- 2016 Boston Red Sox — 50 roster players
- 2015 Boston Red Sox — 51 roster players
- 2014 Boston Red Sox — 55 roster players
- 2013 Boston Red Sox — 48 roster players
- 2012 Boston Red Sox — 56 roster players
- 2011 Boston Red Sox — 49 roster players
- 2010 Boston Red Sox — 53 roster players
- 2009 Boston Red Sox — 52 roster players
- 2008 Boston Red Sox — 47 roster players
- 2007 Boston Red Sox — 40 roster players
- 2006 Boston Red Sox — 53 roster players
- 2005 Boston Red Sox — 52 roster players
- 2004 Boston Red Sox — 50 roster players
- 2003 Boston Red Sox — 47 roster players
- 2002 Boston Red Sox — 39 roster players
- 2001 Boston Red Sox — 48 roster players
- 2000 Boston Red Sox — 52 roster players
- 1999 Boston Red Sox — 48 roster players
- 1998 Boston Red Sox — 47 roster players
- 1997 Boston Red Sox — 46 roster players
- 1996 Boston Red Sox — 55 roster players
- 1995 Boston Red Sox — 53 roster players
- 1994 Boston Red Sox — 45 roster players
- 1993 Boston Red Sox — 39 roster players
- 1992 Boston Red Sox — 38 roster players
- 1991 Boston Red Sox — 39 roster players
- 1990 Boston Red Sox — 43 roster players
- 1989 Boston Red Sox — 35 roster players
- 1988 Boston Red Sox — 37 roster players
- 1987 Boston Red Sox — 35 roster players
- 1986 Boston Red Sox — 38 roster players
- 1985 Boston Red Sox — 36 roster players
- 1984 Boston Red Sox — 33 roster players
- 1983 Boston Red Sox — 31 roster players
- 1982 Boston Red Sox — 33 roster players
- 1981 Boston Red Sox — 32 roster players
- 1980 Boston Red Sox — 43 roster players
- 1979 Boston Red Sox — 34 roster players
- 1978 Boston Red Sox — 31 roster players
- 1977 Boston Red Sox — 38 roster players
- 1976 Boston Red Sox — 34 roster players
- 1975 Boston Red Sox — 37 roster players
- 1974 Boston Red Sox — 37 roster players
- 1973 Boston Red Sox — 32 roster players
- 1972 Boston Red Sox — 39 roster players
- 1971 Boston Red Sox — 36 roster players
- 1970 Boston Red Sox — 40 roster players
- 1969 Boston Red Sox — 42 roster players
- 1968 Boston Red Sox — 36 roster players
- 1967 Boston Red Sox — 39 roster players
- 1966 Boston Red Sox — 42 roster players
- 1965 Boston Red Sox — 30 roster players
- 1964 Boston Red Sox — 34 roster players
- 1963 Boston Red Sox — 31 roster players
- 1962 Boston Red Sox — 33 roster players
- 1961 Boston Red Sox — 32 roster players
- 1960 Boston Red Sox — 45 roster players
- 1959 Boston Red Sox — 41 roster players
- 1958 Boston Red Sox — 35 roster players
- 1957 Boston Red Sox — 36 roster players
- 1956 Boston Red Sox — 34 roster players
- 1955 Boston Red Sox — 40 roster players
- 1954 Boston Red Sox — 36 roster players
- 1953 Boston Red Sox — 37 roster players
- 1952 Boston Red Sox — 48 roster players
- 1951 Boston Red Sox — 38 roster players
- 1950 Boston Red Sox — 41 roster players
- 1949 Boston Red Sox — 35 roster players
- 1948 Boston Red Sox — 34 roster players
- 1947 Boston Red Sox — 41 roster players
- 1946 Boston Red Sox — 39 roster players
- 1945 Boston Red Sox — 37 roster players
- 1944 Boston Red Sox — 33 roster players
- 1943 Boston Red Sox — 31 roster players
- 1942 Boston Red Sox — 26 roster players
- 1941 Boston Red Sox — 31 roster players
- 1940 Boston Red Sox — 33 roster players
- 1939 Boston Red Sox — 29 roster players
- 1938 Boston Red Sox — 30 roster players
- 1937 Boston Red Sox — 30 roster players
- 1936 Boston Red Sox — 31 roster players
- 1935 Boston Red Sox — 33 roster players
- 1934 Boston Red Sox — 34 roster players
- 1933 Boston Red Sox — 36 roster players
- 1932 Boston Red Sox — 42 roster players
- 1931 Boston Red Sox — 37 roster players
- 1930 Boston Red Sox — 35 roster players
- 1929 Boston Red Sox — 36 roster players
- 1928 Boston Red Sox — 35 roster players
- 1927 Boston Red Sox — 37 roster players
- 1926 Boston Red Sox — 40 roster players
- 1925 Boston Red Sox — 41 roster players
- 1924 Boston Red Sox — 33 roster players
- 1923 Boston Red Sox — 30 roster players
- 1922 Boston Red Sox — 30 roster players
- 1921 Boston Red Sox — 27 roster players
- 1920 Boston Red Sox — 33 roster players
- 1919 Boston Red Sox — 30 roster players
- 1918 Boston Red Sox — 32 roster players
- 1917 Boston Red Sox — 27 roster players
- 1916 Boston Red Sox — 29 roster players
- 1915 Boston Red Sox — 30 roster players
- 1914 Boston Red Sox — 32 roster players
- 1913 Boston Red Sox — 29 roster players
- 1912 Boston Red Sox — 27 roster players
- 1911 Boston Red Sox — 43 roster players
- 1910 Boston Red Sox — 35 roster players
- 1909 Boston Red Sox — 37 roster players
- 1908 Boston Red Sox — 41 roster players
- 1907 Boston Americans — 40 roster players
- 1906 Boston Americans — 31 roster players
- 1905 Boston Americans — 27 roster players
- 1904 Boston Americans — 18 roster players
- 1903 Boston Americans — 20 roster players
- 1902 Boston Americans — 24 roster players
- 1901 Boston Americans — 24 roster players