List of Eastern League champions
Past baseball champions of the Eastern League:
1923–1972
- 1923 Williamsport
- 1924 Williamsport
- 1925 York and Williamsport (1)
- 1926 Scranton
- 1927 Harrisburg
- 1928 Harrisburg
- 1929 Binghamton
- 1930 Wilkes-Barre
- 1931 Harrisburg
- 1932 Wilkes-Barre
- 1933 Binghamton
- 1934 Williamsport
- 1935 Binghamton
- 1936 Scranton
- 1937 Elmira
- 1938 Elmira
- 1939 Scranton
- 1940 Binghamton
- 1941 Elmira
- 1942 Scranton
- 1943 Elmira
- 1944 Binghamton
- 1945 Albany
- 1946 Scranton
- 1947 Utica
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- 1948 Scranton
- 1949 Binghamton
- 1950 Wilkes-Barre
- 1951 Scranton
- 1952 Binghamton
- 1953 Binghamton
- 1954 Albany
- 1955 Allentown
- 1956 Schenectady
- 1957 Reading
- 1958 Binghamton
- 1959 Springfield
- 1960 Williamsport and Springfield (2)
- 1961 Springfield
- 1962 Elmira
- 1963 Charleston
- 1964 Elmira
- 1965 Pittsfield
- 1966 Elmira
- 1967 Binghamton
- 1968 Reading
- 1969 York (2)
- 1970 Waterbury
- 1971 Elmira
- 1972 West Haven
1973–present
- 1973 Reading
- 1974 Thetford Mines
- 1975 Bristol
- 1976 West Haven
- 1977 West Haven
- 1978 Bristol
- 1979 West Haven
- 1980 Holyoke
- 1981 Bristol
- 1982 West Haven
- 1983 New Britain
- 1984 Vermont
- 1985 Vermont
- 1986 Vermont
- 1987 Harrisburg
- 1988 Albany-Colonie
- 1989 Albany-Colonie
- 1990 London
- 1991 Albany-Colonie
- 1992 Binghamton
- 1993 Harrisburg
- 1994 Binghamton
- 1995 Reading
- 1996 Harrisburg
- 1997 Harrisburg
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- 1998 Harrisburg
- 1999 Harrisburg
- 2000 New Haven
- 2001 Reading and New Britain (3)
- 2002 Norwich
- 2003 Akron
- 2004 New Hampshire
- 2005 Akron
- 2006 Portland
- 2007 Trenton
- 2008 Trenton
- 2009 Akron
- 2010 Altoona
- 2011 New Hampshire
- 2012 Akron
- 2013 Trenton
- 2014 Binghamton
- 2015 Bowie
(1) – The two teams finished with identical records at the end of the regular season. York defeated Harrisburg 4–2 in a championship series. There were no formal playoffs until the 1934 season.
(2) – Championship series cancelled due to inclement weather.
(3) – Championship series cancelled. All playoffs under the auspices of the National Association of Professional Baseball Clubs were cancelled after the September 11, 2001 attacks. Teams which were leading series at the time were declared winners, while leagues where series were tied, or had not begun, had teams declared co-champions (except New York–Penn League).