Boston Celtics won the NBA Finals for NBA Champion 18 times (1957, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1968, 1969, 1974, 1976, 1981, 1984, 1986, 2008, 2024).
| Year | Contest | Category | For | Sources |
|---|---|---|---|---|
| 2024 | NBA Finals | NBA Champion | 1 · 2 | |
| 2008 | NBA Finals | NBA Champion | 1 · 2 | |
| 1986 | NBA Finals | NBA Champion | 1 · 2 | |
| 1984 | NBA Finals | NBA Champion | 1 · 2 | |
| 1981 | NBA Finals | NBA Champion | 1 · 2 | |
| 1976 | NBA Finals | NBA Champion | 1 · 2 | |
| 1974 | NBA Finals | NBA Champion | 1 · 2 | |
| 1969 | NBA Finals | NBA Champion | 1 · 2 | |
| 1968 | NBA Finals | NBA Champion | 1 · 2 | |
| 1966 | NBA Finals | NBA Champion | 1 · 2 | |
| 1965 | NBA Finals | NBA Champion | 1 · 2 | |
| 1964 | NBA Finals | NBA Champion | 1 · 2 | |
| 1963 | NBA Finals | NBA Champion | 1 · 2 | |
| 1962 | NBA Finals | NBA Champion | 1 · 2 | |
| 1961 | NBA Finals | NBA Champion | 1 · 2 | |
| 1960 | NBA Finals | NBA Champion | 1 · 2 | |
| 1959 | NBA Finals | NBA Champion | 1 · 2 | |
| 1957 | NBA Finals | NBA Champion | 1 · 2 |