| 2025-26 | Boston Celtics | 56 | 26 | .683 | 2nd | 1st | Even in Eastern Conference First Round |
| 2024-25 | Boston Celtics | 61 | 21 | .744 | 2nd | 1st | Lost Eastern Conference Semifinals |
🏆 | 2023-24 | Boston Celtics | 64 | 18 | .780 | 1st | 1st | Won NBA Finals |
| 2022-23 | Boston Celtics | 57 | 25 | .695 | 2nd | 1st | Lost Eastern Conference Finals |
| 2021-22 | Boston Celtics | 51 | 31 | .622 | 2nd | 1st | Lost NBA Finals |
| 2020-21 | Boston Celtics | 36 | 36 | .500 | 7th | 4th | Lost Eastern Conference First Round |
| 2019-20 | Boston Celtics | 48 | 24 | .667 | 3rd | 2nd | Lost Eastern Conference Finals |
| 2018-19 | Boston Celtics | 49 | 33 | .598 | 4th | 3rd | Lost Eastern Conference Semifinals |
| 2017-18 | Boston Celtics | 55 | 27 | .671 | 2nd | 2nd | Lost Eastern Conference Finals |
| 2016-17 | Boston Celtics | 53 | 29 | .646 | 1st | 1st | Lost Eastern Conference Finals |
| 2015-16 | Boston Celtics | 48 | 34 | .585 | 5th | 2nd | Lost Eastern Conference First Round |
| 2014-15 | Boston Celtics | 40 | 42 | .488 | 7th | 2nd | Lost Eastern Conference First Round |
| 2013-14 | Boston Celtics | 25 | 57 | .305 | 12th | 4th | |
| 2012-13 | Boston Celtics | 41 | 40 | .506 | 7th | 3rd | Lost Eastern Conference First Round |
| 2011-12 | Boston Celtics | 39 | 27 | .591 | 4th | 1st | Lost Eastern Conference Finals |
| 2010-11 | Boston Celtics | 56 | 26 | .683 | 3rd | 1st | Lost Eastern Conference Semifinals |
| 2009-10 | Boston Celtics | 50 | 32 | .610 | 4th | 1st | Lost NBA Finals |
| 2008-09 | Boston Celtics | 62 | 20 | .756 | 2nd | 1st | Lost Eastern Conference Semifinals |
🏆 | 2007-08 | Boston Celtics | 66 | 16 | .805 | 1st | 1st | Won NBA Finals |
| 2006-07 | Boston Celtics | 24 | 58 | .293 | 15th | 5th | |
| 2005-06 | Boston Celtics | 33 | 49 | .402 | 11th | 3rd | |
| 2004-05 | Boston Celtics | 45 | 37 | .549 | 3rd | 1st | Lost Eastern Conference First Round |
| 2003-04 | Boston Celtics | 36 | 46 | .439 | 8th | 4th | Lost Eastern Conference First Round |
| 2002-03 | Boston Celtics | 44 | 38 | .537 | 6th | 3rd | Lost Eastern Conference Semifinals |
| 2001-02 | Boston Celtics | 49 | 33 | .598 | 3rd | 2nd | Lost Eastern Conference Finals |
| 2000-01 | Boston Celtics | 36 | 46 | .439 | 9th | 5th | |
| 1999-00 | Boston Celtics | 35 | 47 | .427 | 10th | 5th | |
| 1998-99 | Boston Celtics | 19 | 31 | .380 | 12th | 5th | |
| 1997-98 | Boston Celtics | 36 | 46 | .439 | 12th | 6th | |
| 1996-97 | Boston Celtics | 15 | 67 | .183 | 15th | 7th | |
| 1995-96 | Boston Celtics | 33 | 49 | .402 | 11th | 5th | |
| 1994-95 | Boston Celtics | 35 | 47 | .427 | 8th | 3rd | Lost Eastern Conference First Round |
| 1993-94 | Boston Celtics | 32 | 50 | .390 | 10th | 5th | |
| 1992-93 | Boston Celtics | 48 | 34 | .585 | 4th | 2nd | Lost Eastern Conference First Round |
| 1991-92 | Boston Celtics | 51 | 31 | .622 | 2nd | 1st | Lost Eastern Conference Semifinals |
| 1990-91 | Boston Celtics | 56 | 26 | .683 | 2nd | 1st | Lost Eastern Conference Semifinals |
| 1989-90 | Boston Celtics | 52 | 30 | .634 | 4th | 2nd | Lost Eastern Conference First Round |
| 1988-89 | Boston Celtics | 42 | 40 | .512 | 8th | 3rd | Lost Eastern Conference First Round |
| 1987-88 | Boston Celtics | 57 | 25 | .695 | 1st | 1st | Lost Eastern Conference Finals |
| 1986-87 | Boston Celtics | 59 | 23 | .720 | 1st | 1st | Lost NBA Finals |
🏆 | 1985-86 | Boston Celtics | 67 | 15 | .817 | 1st | 1st | Won NBA Finals |
| 1984-85 | Boston Celtics | 63 | 19 | .768 | 1st | 1st | Lost NBA Finals |
🏆 | 1983-84 | Boston Celtics | 62 | 20 | .756 | 1st | 1st | Won NBA Finals |
| 1982-83 | Boston Celtics | 56 | 26 | .683 | 3rd | 2nd | Lost Eastern Conference Semifinals |
| 1981-82 | Boston Celtics | 63 | 19 | .768 | 1st | 1st | Lost Eastern Conference Finals |
🏆 | 1980-81 | Boston Celtics | 62 | 20 | .756 | 1st | 1st | Won NBA Finals |
| 1979-80 | Boston Celtics | 61 | 21 | .744 | 1st | 1st | Lost Eastern Conference Finals |
| 1978-79 | Boston Celtics | 29 | 53 | .354 | 10th | 5th | |
| 1977-78 | Boston Celtics | 32 | 50 | .390 | 8th | 3rd | |
| 1976-77 | Boston Celtics | 44 | 38 | .537 | 4th | 2nd | Lost Eastern Conference Semifinals |
🏆 | 1975-76 | Boston Celtics | 54 | 28 | .659 | 1st | 1st | Won NBA Finals |
| 1974-75 | Boston Celtics | 60 | 22 | .732 | 1st | 1st | Lost Eastern Conference Finals |
🏆 | 1973-74 | Boston Celtics | 56 | 26 | .683 | 1st | 1st | Won NBA Finals |
| 1972-73 | Boston Celtics | 68 | 14 | .829 | 1st | 1st | Lost Eastern Conference Finals |
| 1971-72 | Boston Celtics | 56 | 26 | .683 | 1st | 1st | Lost Eastern Conference Finals |
| 1970-71 | Boston Celtics | 44 | 38 | .537 | 5th | 3rd | |
| 1969-70 | Boston Celtics | 34 | 48 | .415 | | 6th | |
🏆 | 1968-69 | Boston Celtics | 48 | 34 | .585 | | 4th | Won NBA Finals |
🏆 | 1967-68 | Boston Celtics | 54 | 28 | .659 | | 2nd | Won NBA Finals |
| 1966-67 | Boston Celtics | 60 | 21 | .741 | | 2nd | Lost Eastern Division Finals |
🏆 | 1965-66 | Boston Celtics | 54 | 26 | .675 | | 2nd | Won NBA Finals |
🏆 | 1964-65 | Boston Celtics | 62 | 18 | .775 | | 1st | Won NBA Finals |
🏆 | 1963-64 | Boston Celtics | 59 | 21 | .738 | | 1st | Won NBA Finals |
🏆 | 1962-63 | Boston Celtics | 58 | 22 | .725 | | 1st | Won NBA Finals |
🏆 | 1961-62 | Boston Celtics | 60 | 20 | .750 | | 1st | Won NBA Finals |
🏆 | 1960-61 | Boston Celtics | 57 | 22 | .722 | | 1st | Won NBA Finals |
🏆 | 1959-60 | Boston Celtics | 59 | 16 | .787 | | 1st | Won NBA Finals |
🏆 | 1958-59 | Boston Celtics | 52 | 20 | .722 | | 1st | Won NBA Finals |
| 1957-58 | Boston Celtics | 49 | 23 | .681 | | 1st | Lost NBA Finals |
🏆 | 1956-57 | Boston Celtics | 44 | 28 | .611 | | 1st | Won NBA Finals |
| 1955-56 | Boston Celtics | 39 | 33 | .542 | | 2nd | Lost Eastern Division Semifinals |
| 1954-55 | Boston Celtics | 36 | 36 | .500 | | 3rd | Lost Eastern Division Finals |
| 1953-54 | Boston Celtics | 42 | 30 | .583 | | 3rd | Lost Eastern Division Finals |
| 1952-53 | Boston Celtics | 46 | 25 | .648 | | 3rd | Lost Eastern Division Finals |
| 1951-52 | Boston Celtics | 39 | 27 | .591 | | 2nd | Lost Eastern Division Semifinals |
| 1950-51 | Boston Celtics | 39 | 30 | .565 | | 2nd | Lost Eastern Division Semifinals |
| 1949-50 | Boston Celtics | 22 | 46 | .324 | | 6th | |
| 1948-49 | Boston Celtics | 25 | 35 | .417 | | 5th | |
| 1947-48 | Boston Celtics | 20 | 28 | .417 | | 3rd | Lost Quarterfinals |
| 1946-47 | Boston Celtics | 22 | 38 | .367 | | 5th | |