1965–66 Boston Celtics season Game log December

| Game | Date_ | Opponent | Score | Location_Attendance | Record |
|---|---|---|---|---|---|
| 30 | December 26 | Baltimore Bullets | 120–99 | Baltimore | 22–8 |
| 31 | December 28 | @ Philadelphia 76ers | 93–102 | Baltimore | 22–9 |
| 32 | December 29 | @ New York Knicks | 99–96 | Madison Square Garden | 23–9 |
| 33 | December 30 | San Francisco Warriors | 116–113 | Providence | 24–9 |