1990–91 Boston Celtics season Game log January

| Game | Date_ | Opponent | Score | Location_ | Record |
|---|---|---|---|---|---|
| 29 | Wed. Jan. 2 | New York Knicks | 113-86 | Boston Garden | 24-5 |
| 30 | Fri. Jan. 4 | Phoenix Suns | 132-103 | Boston Garden | 25-5 |
| 31 | Sun. Jan. 6 | Dallas Mavericks | 127-110 | Boston Garden | 26-5 |
| 32 | Tue. Jan. 8 | @ New York Knicks | 101-87 | Madison Square Garden | 27-5 |
| 33 | Wed. Jan. 9 | Milwaukee Bucks | 110-102 | Boston Garden | 28-5 |
| 34 | Fri. Jan. 11 | Los Angeles Clippers | 109-107 | Boston Garden | 29-5 |
| 35 | Sat. Jan. 12 | @ Washington Bullets | 99-116 | Capital Centre | 29-6 |
| 36 | Wed. Jan. 16 | Golden State Warriors | 105-110 | Boston Garden | 29-7 |
| 37 | Fri. Jan. 18 | New Jersey Nets | 106-111 | Boston Garden | 29-8 |