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| 17 NBA championship seasons: 1956-57, 1958-59, 1959-60, 1960-61, 1961-62, |
| 1962-63, 1963-64, 1964-65, 1965-66, 1967-68, 1968-69, 1973-74, 1975-76, |
| 1980-81, 1983-84, 1985-86, 2007-08 |
| Last NBA championship: 2007-08, 12 seasons ago |
| Best finish: |
| beat St Louis in NBA Finals in 1956-57 season |
| beat Minneapolis in NBA Finals in 1958-59 season |
| beat St Louis in NBA Finals in 1959-60 season |
| beat St Louis in NBA Finals in 1960-61 season |
| beat LA Lakers in NBA Finals in 1961-62 season |
| beat LA Lakers in NBA Finals in 1962-63 season |
| beat San Francisco in NBA Finals in 1963-64 season |
| beat LA Lakers in NBA Finals in 1964-65 season |
| beat LA Lakers in NBA Finals in 1965-66 season |
| beat LA Lakers in NBA Finals in 1967-68 season |
| beat LA Lakers in NBA Finals in 1968-69 season |
| beat Milwaukee in NBA Finals in 1973-74 season |
| beat Phoenix in NBA Finals in 1975-76 season |
| beat Houston in NBA Finals in 1980-81 season |
| beat LA Lakers in NBA Finals in 1983-84 season |
| beat Houston in NBA Finals in 1985-86 season |
| beat LA Lakers in NBA Finals in 2007-08 season |
| TEAM | SEASON | RECORD | PERC | DIV STD | GB | CNF STD | PLAYOFFS |
| Boston | 1946-47 | 22-38 | .367 | 6th East | -27.0 | missed playoffs | |
| Boston | 1947-48 | 20-28 | .417 | 3rd East | - 7.0 | LChS | |
| Boston | 1948-49 | 25-35 | .417 | 5th East | -13.0 | missed playoffs | |
| Boston | 1949-50 | 22-46 | .324 | 6th East | -31.0 | missed playoffs | |
| Boston | 1950-51 | 39-30 | .565 | 2nd East | - 2.5 | LNY | |
| Boston | 1951-52 | 39-27 | .591 | 2nd East | - 1.0 | LNY | |
| Boston | 1952-53 | 46-25 | .648 | 3rd East | - 1.5 | WSyr LNY | |
| Boston | 1953-54 | 42-30 | .583 | 2nd East | - 2.0 | LSyr | |
| Boston | 1954-55 | 36-36 | .500 | 3rd East | - 7.0 | WNY LSyr | |
| Boston | 1955-56 | 39-33 | .542 | 2nd East | - 6.0 | LSyr | |
| %Boston | 1956-57 | 44-28 | .611 | 1st East | + 6.0 | bye WSyr WStL | |
| Boston | 1957-58 | 49-23 | .681 | 1st East | + 8.0 | bye WPhW LStL | |
| %Boston | 1958-59 | 52-20 | .722 | 1st East | +12.0 | bye WSyr WMnL | |
| %Boston | 1959-60 | 59-16 | .787 | 1st East | +10.0 | bye WPhi WStL | |
| %Boston | 1960-61 | 57-22 | .722 | 1st East | +11.0 | bye WSyr WStL | |
| %Boston | 1961-62 | 60-20 | .750 | 1st East | +11.0 | bye WPhi WLAL | |
| %Boston | 1962-63 | 58-22 | .725 | 1st East | +10.0 | bye WCin WLAL | |
| %Boston | 1963-64 | 59-21 | .738 | 1st East | + 4.0 | bye WCin WSF | |
| %Boston | 1964-65 | 62-18 | .775 | 1st East | +14.0 | bye WPhi WLAL | |
| %Boston | 1965-66 | 54-26 | .675 | 2nd East | - 1.0 | WCin WPhi WLAL | |
| Boston | 1966-67 | 60-21 | .741 | 2nd East | - 8.0 | WNY LPhi | |
| %Boston | 1967-68 | 54-28 | .659 | 2nd East | - 8.0 | WDet WPhi WLAL | |
| %Boston | 1968-69 | 48-34 | .585 | 4th East | - 9.0 | WPhi WNY WLAL | |
| Boston | 1969-70 | 34-48 | .415 | 6th East | -26.0 | missed playoffs | |
| Boston | 1970-71 | 44-38 | .537 | 3rd Atlantic | - 8.0 | --- East | missed playoffs |
| Boston | 1971-72 | 56-26 | .683 | 1st Atlantic | + 8.0 | 1st East | WAtl LNY |
| Boston | 1972-73 | 68-14 | .829 | 1st Atlantic | +11.0 | 1st East | WAtl LNY |
| %Boston | 1973-74 | 56-26 | .683 | 1st Atlantic | + 7.0 | 1st East | WBuf WNY WMil |
| Boston | 1974-75 | 60-22 | .732 | 1st Atlantic | +11.0 | 1st East | bye WHou LWsB |
| %Boston | 1975-76 | 54-28 | .659 | 1st Atlantic | + 8.0 | 1st East | bye WBuf WCle WPho |
| Boston | 1976-77 | 44-38 | .537 | 2nd Atlantic | - 6.0 | 4th East | WSA LPhi |
| Boston | 1977-78 | 32-50 | .390 | 3rd Atlantic | -23.0 | --- East | missed playoffs |
| Boston | 1978-79 | 29-53 | .354 | 5th Atlantic | -25.0 | --- East | missed playoffs |
| Boston | 1979-80 | 61-21 | .744 | 1st Atlantic | + 2.0 | 1st East | bye WHou LPhi |
| %Boston | 1980-81 | 62-20 | .756 | 1st Atlantic | + 0.0 | 1st East | bye WChi WPhi WHou |
| Boston | 1981-82 | 63-19 | .768 | 1st Atlantic | + 5.0 | 1st East | bye WWsB LPhi |
| Boston | 1982-83 | 56-26 | .683 | 2nd Atlantic | - 9.0 | 3rd East | WAtl LMil |
| %Boston | 1983-84 | 62-20 | .756 | 1st Atlantic | +10.0 | 1st East | WWsB WNY WMil WLAL |
| Boston | 1984-85 | 63-19 | .768 | 1st Atlantic | + 5.0 | 1st East | WCle WDet WPhi LLAL |
| %Boston | 1985-86 | 67-15 | .817 | 1st Atlantic | +13.0 | 1st East | WChi WAtl WMil WHou |
| Boston | 1986-87 | 59-23 | .720 | 1st Atlantic | +14.0 | 1st East | WChi WMil WDet LLAL |
| Boston | 1987-88 | 57-25 | .695 | 1st Atlantic | +19.0 | 1st East | WNY WAtl LDet |
| Boston | 1988-89 | 42-40 | .512 | 3rd Atlantic | -10.0 | 8th East | LDet |
| Boston | 1989-90 | 52-30 | .634 | 2nd Atlantic | - 1.0 | 4th East | LNY |
| Boston | 1990-91 | 56-26 | .683 | 1st Atlantic | +12.0 | 2nd East | WInd LDet |
| Boston | 1991-92 | 51-31 | .622 | 1st Atlantic | + 0.0 | 2nd East | WInd LCle |
| Boston | 1992-93 | 48-34 | .585 | 2nd Atlantic | -12.0 | 4th East | LCha |
| Boston | 1993-94 | 32-50 | .390 | 5th Atlantic | -25.0 | --- East | missed playoffs |
| Boston | 1994-95 | 35-47 | .427 | 3rd Atlantic | -22.0 | 8th East | LOrl |
| Boston | 1995-96 | 33-49 | .402 | 5th Atlantic | -27.0 | --- East | missed playoffs |
| Boston | 1996-97 | 15-67 | .183 | 7th Atlantic | -46.0 | --- East | missed playoffs |
| Boston | 1997-98 | 36-46 | .439 | 6th Atlantic | -19.0 | --- East | missed playoffs |
| Boston | 1998-99 | 19-31 | .380 | 5th Atlantic | -14.0 | --- East | missed playoffs |
| Boston | 1999-00 | 35-47 | .427 | 5th Atlantic | -17.0 | --- East | missed playoffs |
| Boston | 2000-01 | 36-46 | .439 | 5th Atlantic | -20.0 | --- East | missed playoffs |
| Boston | 2001-02 | 49-33 | .598 | 2nd Atlantic | -20.0 | 3rd East | WPhi WDet LNJ |
| Boston | 2002-03 | 44-38 | .537 | 3rd Atlantic | - 5.0 | 6th East | WInd LNJ |
| Boston | 2003-04 | 36-46 | .439 | 4th Atlantic | -11.0 | 8th East | LInd |
| Boston | 2004-05 | 45-37 | .549 | 1st Atlantic | + 2.0 | 3rd East | LInd |
| Boston | 2005-06 | 33-49 | .402 | 3rd Atlantic | -16.0 | --- East | missed playoffs |
| Boston | 2006-07 | 24-58 | .293 | 5th Atlantic | -23.0 | --- East | missed playoffs |
| %Boston | 2007-08 | 66-16 | .805 | 1st Atlantic | +25.0 | 1st East | WAtl WCle WDet WLAL |
| Boston | 2008-09 | 62-20 | .756 | 1st Atlantic | +21.0 | 2nd East | WChi LOrl |
| Boston | 2009-10 | 50-32 | .610 | 1st Atlantic | +10.0 | 4th East | WMia WCle WOrl LLAL |
| Boston | 2010-11 | 56-26 | .683 | 1st Atlantic | +14.0 | 3rd East | WNY LMia |
| Boston | 2011-12 | 39-27 | .591 | 1st Atlantic | + 3.0 | 4th East | WAtl WPhi LMia |
| Boston | 2012-13 | 41-40 | .506 | 3rd Atlantic | -12.5 | 7th East | LNY |
| Boston | 2013-14 | 25-57 | .305 | 4th Atlantic | -23.0 | --- East | missed playoffs |
| Boston | 2014-15 | 40-42 | .488 | 2nd Atlantic | - 9.0 | 7th East | LCle |
| Boston | 2015-16 | 48-34 | .585 | 2nd Atlantic | - 8.0 | 5th East | LAtl |
| Boston | 2016-17 | 53-29 | .646 | 1st Atlantic | + 2.0 | 1st East | WChi WWsh LCle |
| Boston | 2017-18 | 55-27 | .671 | 2nd Atlantic | - 4.0 | 2nd East | WMil WPhi LCle |
| Boston | 2018-19 | 49-33 | .598 | 3rd Atlantic | - 9.0 | 4th East | WInd LMil |
| Boston | 2019-20 | 48-24 | .667 | 2nd Atlantic | - 5.0 | 3rd East | WPhi WTor LMia |