2002–03 Boston Celtics season Game log January

| Game | Date_ | Opponent | Score | Location_ | Record |
|---|---|---|---|---|---|
| 32 | January 3 | Portland Trail Blazers | L 103-108 | FleetCenter | 19-13 |
| 33 | January 6 | Washington Wizards | L 95-100 | FleetCenter | 19-14 |
| 34 | January 8 | at New Orleans Hornets | W 93-83 | New Orleans Arena | 20-14 |
| 35 | January 10 | at Dallas Mavericks | L 78-103 | American Airlines Center | 20-15 |
| 36 | January 12 | at San Antonio Spurs | L 80-81 | SBC Center | 20-16 |
| 37 | January 13 | at Houston Rockets | L 92-101 | Compaq Center | 20-17 |
| 38 | January 15 | Atlanta Hawks | W 86-66 | FleetCenter | 21-17 |
| 39 | January 17 | Indiana Pacers | W 98-93 | FleetCenter | 22-17 |
| 40 | January 18 | at Milwaukee Bucks | W 97-95 | Bradley Center | 23-17 |