Below is a list of Massachusetts state high school baseball champions sanctioned by the Massachusetts Interscholastic Athletic Association since the organization began holding state championship games in 1934.[1]
| Year | Division 1A | Division 1 | Division 2 | Division 3 | Division 4 | Division 5 | |
|---|---|---|---|---|---|---|---|
| 1934 | |||||||
| 1935 | Somerville | ||||||
| 1936 | Templeton | ||||||
| 1937 | Lynn English | ||||||
| 1938 | Brockton | ||||||
| 1939 | Palmer | ||||||
| 1940 | Belmont | ||||||
| 1941 | Somerville (2) | ||||||
| 1942 | Turners Falls | ||||||
| 1943 | Norwood | ||||||
| 1944 | Newton | ||||||
| 1945 | No state finals due to travel restraints | ||||||
| 1946 | Keith Academy | ||||||
| 1947 | Lynn Classical | ||||||
| 1948 | Springfield Cathedral | ||||||
| 1949 | Pittsfield | ||||||
| 1950 | Holyoke | ||||||
| 1951 | Somerville (3) | ||||||
| 1952 | St. John's | ||||||
| 1953 | Holyoke (2) | ||||||
| 1954 | Somerville (4) | ||||||
| 1955 | Newton (2) | ||||||
| 1956 | Everett | ||||||
| 1957 | Durfee | ||||||
| 1958 | St. Stephen's | ||||||
| 1959 | Belmont (2) | ||||||
| 1960 | Pittsfield (2) | ||||||
| 1961 | Chicopee | ||||||
| 1962 | Chicopee (2) | ||||||
| 1963 | Chicopee (3) | ||||||
| 1964 | Waltham | ||||||
| 1965 | Somerville (5) | ||||||
| 1966 | Pittsfield (3) | ||||||
| 1967 | Westfield | ||||||
| 1968 | Springfield Tech | ||||||
| 1969 | Springfield Tech (2) | ||||||
| 1970 | Springfield Tech (3) | ||||||
| 1971 | Durfee (2) | ||||||
| 1972 | St. Joseph's | ||||||
| 1973 | Lynn Tech | ||||||
| 1974 | Quabbin Regional | ||||||
| 1975 | Springfield Tech (4) | St. Joseph's (2) | |||||
| 1976 | St. John's (2) | Norwell | |||||
| 1977 | West Boylston | ||||||
| 1978 | Holyoke (3) | Frontier Regional | |||||
| 1979 | Matignon | ||||||
| 1980 | Lynn English (2) | Norton | |||||
| 1981 | Brockton (2) | Ware | |||||
| 1982 | No state finals due to Prop. 2 | ||||||
| 1983 | No state finals due to Prop. 2 | ||||||
| 1984 | Braintree (2) | Millbury | |||||
| 1985 | Holyoke (4) | Hopkins Academy | |||||
| 1986 | Oxford | ||||||
| 1987 | St. Peter-Marian (2) | St. Mary's Lynn | |||||
| 1988 | Leominster (2) | St. Mary's Lynn (2) | |||||
| 1989 | Braintree (3) | Norton (2) | |||||
| 1990 | Drury (2) | Bishop Connolly | |||||
| 1991 | Westborough (2) | Narragansett Regional | |||||
| 1992 | Andover (2) | Marblehead (2) | |||||
| 1993 | Swampscott | ||||||
| 1994 | New Bedford (2) | Pentucket Regional | |||||
| 1995 | Durfee (3) | Archbishop Williams (2) | |||||
| 1996 | Leominster (3) | Harwich | |||||
| 1997 | Brockton (3) | Amesbury | |||||
| 1998 | New Bedford (3) | Bishop Stang | |||||
| 1999 | Northbridge | ||||||
| 2000 | St. John's Prep (2) | Ashland | |||||
| 2001 | Nipmuc Regional | ||||||
| 2002 | St. John's (3) | Hudson (2) | Nipmuc Regional (2) | ||||
| 2003 | Marian | ||||||
| 2004 | Bishop Fenwick | ||||||
| 2005 | Nipmuc Regional (3) | ||||||
| 2006 | Somerset (2) | Harwich (2) | |||||
| 2007 | Lincoln-Sudbury (2) | Harwich (3) | |||||
| 2008 | Boston College High (2) | Westwood | |||||
| 2009 | Boston College High (3) | Auburn (2) | Abington | ||||
| 2010 | Northbridge (2) | Norton (3) | Cohasset | ||||
| 2011 | Lincoln-Sudbury (3) | Plymouth North (2) | Cohasset (2) | ||||
| 2012 | Xaverian Brothers (2) | North Reading (2) | Georgetown | ||||
| 2013 | Middleborough (2) | Lowell Catholic | |||||
| 2014 | Newton North (3) | Leominster (4) | Masconomet Regional (2) | Pope John Paul II | |||
| 2015 | Braintree (4) | Norwood (2) | Middleborough (3) | St. Mary's Lynn (3) | St. John Paul II (2) | ||
| 2016 | Braintree (5) | West Springfield (2) | St. John Paul II (3) | ||||
| 2017 | St. John's (4) | Auburn (3) | St. Mary's Westfield | ||||
| 2018 | Franklin (2) | Archbishop Williams (3) | |||||
| 2019 | St. Mary's Lynn (4) | Taconic (2) | Manchester-Essex | ||||
| 2020 | No season due to the COVID-19 pandemic | ||||||
| 2021 | No tournament due to COVID-19 | Xaverian Brothers (3) | St. Mary's Lynn (5) | Taconic (3) | Hopkins Academy (2) | ||
| 2022 | Taunton (2) | Austin Prep (2) | Manchester Essex (2) | Mount Greylock | |||
| 2023 | Taunton (3) | Milton (2) | |||||
| Rank | School | Number | Years | |
|---|---|---|---|---|
| 1 | Somerville | 5 | 1935, 1941, 1951, 1954, 1965 | |
| 2 | Braintree | 5 | 1972, 1984, 1989, 2015, 2016 | |
| 3 | St. Mary's Lynn | 5 | 1987, 1988, 2017, 2019, 2021 | |
| 4 | Springfield Tech | 4 | 1968, 1969, 1970, 1975 | |
| 5 | Holyoke | 4 | 1950, 1953, 1978, 1985 | |
| 6 | Leominster | 4 | 1986, 1988, 1996, 2014 | |
| 7 | St. John's | 4 | 1952, 1976, 2002, 2017 | |
| 8 | Chicopee | 3 | 1961, 1962, 1963 | |
| 9 | Pittsfield | 3 | 1949, 1960, 1966 | |
| 10 | Durfee | 3 | 1957, 1971, 1995 |