List of Boston Celtics seasons
This is a list of seasons completed by the Boston Celtics of the National Basketball Association. It documents the team’s season-by-season records, including post-season records, and also includes year-end awards won by the team's players and/or coaches.
With seventeen NBA Championships, the Celtics have won more than any other NBA franchise, while the of the NBA Championship, with eight straight titles, is the longest consecutive championship winning streak of any North American professional sports team to date. Following this, the Celtics had two major periods of success separated by quite poor seasons during rebuilding. Between 1971–72 and 1975–76 the Celtics, led by Dave Cowens and John Havlicek, won 294 of 410 regular season games and reached the conference finals in each of those five seasons, winning two more NBA championships, whilst between 1979–80 and 1987–88 led by the frontcourt of Larry Bird, Kevin McHale and Robert Parish the Celtics won 550 of 742 regular season games and reached every Conference Final except for 1982–83 when they were swept in the Conference Semifinals by the Milwaukee Bucks. The Celtics have had 13 separate seasons where they won 60 or more regular season contests, the highest number for any franchise.
Between 1993–94 and 2006–07 the Celtics had their single sustained period of failure, with an overall win percent of and only twice getting beyond the first playoff round. With the acquisition of Kevin Garnett for 2007–08, the Celtics achieved a record single-season rise in win percentage to claim their first title in twenty-two seasons, in the process achieving the best average point differential between the 1995–96 Bulls and the 2015–16 Warriors. The team remained a power until after the 2011 lockout, but lost to the Lakers in their most recent Finals appearance.
The Celtics are 23–8 all-time in seventh games of playoff series, and 7–1 in Game 7 of the NBA Finals.
Seasons
Note: Statistics are correct as of April 11, 2019.| NBA champions | Conference champions | Division champions | Playoff berth |
| Season | Conference | Finish | Division | Finish | Wins | Losses | Win% | GB | Playoffs | Awards | Ref. |
| 1946–47 | — | — | Eastern | 5th | 22 | 38 | .367 | 27 | — | — | |
| 1947–48 | — | — | Eastern | 3rd | 20 | 28 | .417 | 7 | Lost First Round 2–1 | — | |
| 1948–49 | — | — | Eastern | 5th | 25 | 35 | .417 | 13 | — | — | |
| 1949–50 | — | — | Eastern | 6th | 22 | 46 | .324 | 31 | — | — | |
| 1950–51 | — | — | Eastern | 2nd | 39 | 30 | .565 | 2.5 | Lost Division Semifinals 2–0 | Ed Macauley | |
| 1951–52 | — | — | Eastern | 2nd | 39 | 27 | .591 | 1 | Lost Division Semifinals 2–1 | — | |
| 1952–53 | — | — | Eastern | 3rd | 46 | 25 | .648 | 1.5 | Won Division Semifinals 2–0 Lost Division Finals 3–1 | — | |
| 1953–54 | — | — | Eastern | T-2nd | 42 | 30 | .583 | 2 | Lost Division Finals 2–0 | Bob Cousy | |
| 1954–55 | — | — | Eastern | 3rd | 36 | 36 | .500 | 7 | Won Division Semifinals 2–1 Lost Division Finals 3–1 | Bill Sharman | |
| 1955–56 | — | — | Eastern | 2nd | 39 | 33 | .542 | 6 | Lost Division Semifinals 2–1 | — | |
| 1956–57 | — | — | Eastern | 1st | 44 | 28 | .611 | — | Won Division Finals 3–0 Won NBA Finals 4–3 | Bob Cousy Tom Heinsohn | |
| 1957–58 | — | — | Eastern | 1st | 49 | 23 | .681 | — | Won Division Finals 4–1 Lost NBA Finals 4–2 | Bill Russell | |
| 1958–59 | — | — | Eastern | 1st | 52 | 20 | .722 | — | Won Division Finals 4–3 Won NBA Finals 4–0 | — | |
| 1959–60 | — | — | Eastern | 1st | 59 | 16 | .787 | — | Won Division Finals 4–2 Won NBA Finals 4–3 | — | |
| 1960–61 | — | — | Eastern | 1st | 57 | 22 | .722 | — | Won Division Finals 4–1 Won NBA Finals 4–1 | Bill Russell | |
| 1961–62 | — | — | Eastern | 1st | 60 | 20 | .750 | — | Won Division Finals 4–3 Won NBA Finals 4–3 | Bill Russell | |
| 1962–63 | — | — | Eastern | 1st | 58 | 22 | .725 | — | Won Division Finals 4–3 Won NBA Finals 4–2 | Bill Russell | |
| 1963–64 | — | — | Eastern | 1st | 59 | 21 | .738 | — | Won Division Finals 4–1 Won NBA Finals 4–1 | — | |
| 1964–65 | — | — | Eastern | 1st | 62 | 18 | .775 | — | Won Division Finals 4–3 Won NBA Finals 4–1 | Bill Russell Red Auerbach | |
| 1965–66 | — | — | Eastern | 2nd | 54 | 26 | .675 | 1 | Won Division Semifinals 3–2 Won Division Finals 4–1 Won NBA Finals 4–3 | — | |
| 1966–67 | — | — | Eastern | 2nd | 60 | 21 | .741 | 8 | Won Division Semifinals 3–1 Lost Division Finals 4–1 | — | |
| 1967–68 | — | — | Eastern | 2nd | 54 | 28 | .659 | 8 | Won Division Semifinals 4–2 Won Division Finals 4–3 Won NBA Finals 4–2 | — | |
| 1968–69 | — | — | Eastern | 4th | 48 | 34 | .585 | 9 | Won Division Semifinals 4–1 Won Division Finals 4–2 Won NBA Finals 4–3 | — | |
| 1969–70 | — | — | Eastern | 6th | 34 | 48 | .415 | 26 | — | — | |
| 1970–71 | Eastern | 5th | Atlantic | 3rd | 44 | 38 | .537 | 8 | — | Dave Cowens | |
| 1971–72 | Eastern | 1st | Atlantic | 1st | 56 | 26 | .683 | — | Won Conference Semifinals 4–2 Lost Conference Finals 4–1 | — | |
| 1972–73 | Eastern | 1st | Atlantic | 1st | 68 | 14 | .829 | — | Won Conference Semifinals 4–2 Lost Conference Finals 4–3 | Dave Cowens Tom Heinsohn | |
| 1973–74 | Eastern | 1st | Atlantic | 1st | 56 | 26 | .683 | — | Won Conference Semifinals 4–2 Won Conference Finals 4–1 Won NBA Finals 4–3 | John Havlicek | |
| 1974–75 | Eastern | 1st | Atlantic | 1st | 60 | 22 | .732 | — | Won Conference Semifinals 4–1 Lost Conference Finals 4–2 | — | |
| 1975–76 | Eastern | 1st | Atlantic | 1st | 54 | 28 | .659 | — | Won Conference Semifinals 4–2 Won Conference Finals 4–2 Won NBA Finals 4–2 | Jo Jo White | |
| 1976–77 | Eastern | 4th | Atlantic | 2nd | 44 | 38 | .537 | 6 | Won First Round 2–0 Lost Conference Semifinals 4–3 | — | |
| 1977–78 | Eastern | 8th | Atlantic | 3rd | 32 | 50 | .390 | 23 | — | — | |
| 1978–79 | Eastern | 10th | Atlantic | 5th | 29 | 53 | .354 | 25 | — | — | |
| 1979–80 | Eastern | 1st | Atlantic | 1st | 61 | 21 | .744 | — | Won Conference Semifinals 4–0 Lost Conference Finals 4–1 | Larry Bird Bill Fitch Red Auerbach | |
| 1980–81 | Eastern | 1st | Atlantic | 1st | 62 | 20 | .756 | — | Won Conference Semifinals 4–0 Won Conference Finals 4–3 Won NBA Finals 4–2 | Nate Archibald Cedric Maxwell | |
| 1981–82 | Eastern | 1st | Atlantic | 1st | 63 | 19 | .768 | — | Won Conference Semifinals 4–1 Lost Conference Finals 4–3 | Larry Bird | |
| 1982–83 | Eastern | 3rd | Atlantic | 2nd | 56 | 26 | .683 | 9 | Won First Round 2–1 Lost Conference Semifinals 4–0 | — | |
| 1983–84 | Eastern | 1st | Atlantic | 1st | 62 | 20 | .756 | — | Won First Round 3–1 Won Conference Semifinals 4–3 Won Conference Finals 4–1 Won NBA Finals 4–3 | Larry Bird Kevin McHale | |
| 1984–85 | Eastern | 1st | Atlantic | 1st | 63 | 19 | .768 | — | Won First Round 3–1 Won Conference Semifinals 4–2 Won Conference Finals 4–1 Lost NBA Finals 4–2 | Larry Bird Kevin McHale | |
| 1985–86 | Eastern | 1st | Atlantic | 1st | 67 | 15 | .817 | — | Won First Round 3–0 Won Conference Semifinals 4–1 Won Conference Finals 4–0 Won NBA Finals 4–2 | Larry Bird Bill Walton | |
| 1986–87 | Eastern | 1st | Atlantic | 1st | 59 | 23 | .720 | — | Won First Round 3–0 Won Conference Semifinals 4–3 Won Conference Finals 4–3 Lost NBA Finals 4–2 | — | |
| 1987–88 | Eastern | 1st | Atlantic | 1st | 57 | 25 | .695 | — | Won First Round 3–1 Won Conference Semifinals 4–3 Lost Conference Finals 4–2 | — | |
| 1988–89 | Eastern | 8th | Atlantic | 3rd | 42 | 40 | .512 | 10 | Lost First Round 3–0 | — | |
| 1989–90 | Eastern | 4th | Atlantic | 2nd | 52 | 30 | .634 | 1 | Lost First Round 3–2 | — | |
| 1990–91 | Eastern | 2nd | Atlantic | 1st | 56 | 26 | .683 | — | Won First Round 3–2 Lost Conference Semifinals 4–2 | — | |
| 1991–92 | Eastern | 2nd | Atlantic | 1st | 51 | 31 | .622 | — | Won First Round 3–0 Lost Conference Semifinals 4–3 | — | |
| 1992–93 | Eastern | 4th | Atlantic | 2nd | 48 | 34 | .585 | 12 | Lost First Round 3–1 | — | |
| 1993–94 | Eastern | 10th | Atlantic | 5th | 32 | 50 | .390 | 25 | — | — | |
| 1994–95 | Eastern | 8th | Atlantic | 3rd | 35 | 47 | .427 | 22 | Lost First Round 3–1 | — | |
| 1995–96 | Eastern | 11th | Atlantic | 5th | 33 | 49 | .402 | 27 | — | — | |
| 1996–97 | Eastern | 15th | Atlantic | 7th | 15 | 67 | .183 | 46 | — | — | |
| 1997–98 | Eastern | 12th | Atlantic | 6th | 36 | 46 | .439 | 19 | — | — | |
| 1998–99 | Eastern | 12th | Atlantic | 5th | 19 | 31 | .380 | 14 | — | — | |
| 1999–00 | Eastern | 10th | Atlantic | 5th | 35 | 47 | .427 | 17 | — | — | |
| 2000–01 | Eastern | 9th | Atlantic | 5th | 36 | 46 | .439 | 20 | — | — | |
| 2001–02 | Eastern | 3rd | Atlantic | 2nd | 49 | 33 | .598 | 3 | Won First Round 3–2 Won Conference Semifinals 4–1 Lost Conference Finals 4–2 | — | |
| 2002–03 | Eastern | 6th | Atlantic | 3rd | 44 | 38 | .537 | 5 | Won First Round 4–2 Lost Conference Semifinals 4–0 | — | |
| 2003–04 | Eastern | 8th | Atlantic | 4th | 36 | 46 | .439 | 11 | Lost First Round 4–0 | — | |
| 2004–05 | Eastern | 3rd | Atlantic | 1st | 45 | 37 | .549 | — | Lost First Round 4–3 | — | |
| 2005–06 | Eastern | 11th | Atlantic | 3rd | 33 | 49 | .402 | 16 | — | — | |
| 2006–07 | Eastern | 15th | Atlantic | 5th | 24 | 58 | .293 | 23 | — | — | |
| 2007–08 | Eastern | 1st | Atlantic | 1st | 66 | 16 | .805 | — | Won First Round 4–3 Won Conference Semifinals 4–3 Won Conference Finals 4–2 Won NBA Finals 4–2 | Kevin Garnett Paul Pierce Danny Ainge | |
| 2008–09 | Eastern | 2nd | Atlantic | 1st | 62 | 20 | .756 | — | Won First Round 4–3 Lost Conference Semifinals 4–3 | — | |
| 2009–10 | Eastern | 4th | Atlantic | 1st | 50 | 32 | .610 | — | Won First Round 4–1 Won Conference Semifinals 4–2 Won Conference Finals 4–2 Lost NBA Finals 4–3 | — | |
| 2010–11 | Eastern | 3rd | Atlantic | 1st | 56 | 26 | .683 | — | Won First Round 4–0 Lost Conference Semifinals 4–1 | — | |
| 2011–12 | Eastern | 4th | Atlantic | 1st | 39 | 27 | .591 | — | Won First Round 4–2 Won Conference Semifinals 4–3 Lost Conference Finals 4–3 | — | |
| 2012–13 | Eastern | 7th | Atlantic | 3rd | 41 | 40 | 12.5 | Lost First Round 4–2 | — | ||
| 2013–14 | Eastern | 12th | Atlantic | 4th | 25 | 57 | 23 | — | — | ||
| 2014–15 | Eastern | 7th | Atlantic | 2nd | 40 | 42 | 9 | Lost First Round 4–0 | — | ||
| 2015–16 | Eastern | 5th | Atlantic | 2nd | 48 | 34 | 8 | Lost First Round 4–2 | — | ||
| 2016–17 | Eastern | 1st | Atlantic | 1st | 53 | 29 | — | Won First Round 4–2 Won Conference Semifinals 4–3 Lost Conference Finals 4–1 | — | ||
| 2017–18 | Eastern | 2nd | Atlantic | 2nd | 55 | 27 | 4 | Won First Round 4–3 Won Conference Semifinals 4–1 Lost Conference Finals 4–3 | |||
| 2018–19 | Eastern | 4th | Atlantic | 3rd | 49 | 33 | .598 | 9 | Won First Round 4–0 Lost Conference Semifinals 4–1 | — |
All-time records
| Statistic | Wins | Losses | Win% |
| All-time regular season record | 3,378 | 2,346 | ' |
| All-time post-season record | 358 | 267 | ' |
| All-time regular season & post-season record | 3,736 | 2,613 |