| 70 | 56 | 17 |
| Seasons | Made Playoffs | Championships |
1957, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1968, 1969, 1974, 1976, 1981, 1984, 1986, 2008
The Boston Celtics have played a total of 70 seasons. Their first season was in 1951, and their most recent season was in 2020.
No, the Boston Celtics have been known by that name since 1951.
The Boston Celtics last made the playoffs in 2020, when they lost the Eastern Conference Finals. They've been in the playoffs a total of 56 times in their 70 seasons.
The Boston Celtics last missed the playoffs in 2014.
In 2020, the Boston Celtics beat the Toronto Raptors in the Eastern Conference Semifinals.
In 2020, the Boston Celtics lost to the Miami Heat in the Eastern Conference Finals.
The Boston Celtics won the NBA Finals 17 times, in 1957, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1968, 1969, 1974, 1976, 1981, 1984, 1986 and 2008.
| Year | Result |
|---|---|
| 2020 | Lost Eastern Conference Finals (Won 2 Rounds) |
| 2019 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 2018 | Lost Eastern Conference Finals (Won 2 Rounds) |
| 2017 | Lost Eastern Conference Finals (Won 2 Rounds) |
| 2016 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 2015 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 2014 | Missed Playoffs |
| 2013 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 2012 | Lost Eastern Conference Finals (Won 2 Rounds) |
| 2011 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 2010 | Lost Finals (Won 3 Rounds) |
| 2009 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 2008 | Won Finals |
| 2007 | Missed Playoffs |
| 2006 | Missed Playoffs |
| 2005 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 2004 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 2003 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 2002 | Lost Eastern Conference Finals (Won 2 Rounds) |
| 2001 | Missed Playoffs |
| 2000 | Missed Playoffs |
| 1999 | Missed Playoffs |
| 1998 | Missed Playoffs |
| 1997 | Missed Playoffs |
| 1996 | Missed Playoffs |
| 1995 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 1994 | Missed Playoffs |
| 1993 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 1992 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 1991 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 1990 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 1989 | Lost Eastern Conference First Round (Won 0 Rounds) |
| 1988 | Lost Eastern Conference Finals (Won 2 Rounds) |
| 1987 | Lost Finals (Won 3 Rounds) |
| 1986 | Won Finals |
| 1985 | Lost Finals (Won 3 Rounds) |
| 1984 | Won Finals |
| 1983 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 1982 | Lost Eastern Conference Finals (Won 1 Round) |
| 1981 | Won Finals |
| 1980 | Lost Eastern Conference Finals (Won 1 Round) |
| 1979 | Missed Playoffs |
| 1978 | Missed Playoffs |
| 1977 | Lost Eastern Conference Semifinals (Won 1 Round) |
| 1976 | Won Finals |
| 1975 | Lost Eastern Conference Finals (Won 1 Round) |
| 1974 | Won Finals |
| 1973 | Lost Eastern Conference Finals (Won 1 Round) |
| 1972 | Lost Eastern Conference Finals (Won 1 Round) |
| 1971 | Missed Playoffs |
| 1970 | Missed Playoffs |
| 1969 | Won Finals |
| 1968 | Won Finals |
| 1967 | Lost Eastern Division Finals (Won 1 Round) |
| 1966 | Won Finals |
| 1965 | Won Finals |
| 1964 | Won Finals |
| 1963 | Won Finals |
| 1962 | Won Finals |
| 1961 | Won Finals |
| 1960 | Won Finals |
| 1959 | Won Finals |
| 1958 | Lost Finals (Won 1 Round) |
| 1957 | Won Finals |
| 1956 | Lost Eastern Division Semifinals (Won 0 Rounds) |
| 1955 | Lost Eastern Division Finals (Won 1 Round) |
| 1954 | Lost Eastern Division Finals (Won 0 Rounds) |
| 1953 | Lost Eastern Division Finals (Won 1 Round) |
| 1952 | Lost Eastern Division Semifinals (Won 0 Rounds) |
| 1951 | Lost Eastern Division Semifinals (Won 0 Rounds) |
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