2008–09 Boston Celtics season Game log January

| Game | Date_ | Team | Score | High_points | High_rebounds | High_assists | Location_Attendance | Record |
|---|---|---|---|---|---|---|---|---|
| 43 | January 19 | Phoenix | W 104–87 (OT) | Rajon Rondo (23) | Glen Davis (9) | Paul Pierce (8) | TD Banknorth Garden 18,624 | 34–9 |
| 44 | January 21 | @ Miami | W 98–83 (OT) | Ray Allen (27) | Kevin Garnett (13) | Rajon Rondo (10) | American Airlines Arena 19,600 | 35–9 |
| 45 | January 22 | @ Orlando | W 90–80 (OT) | Paul Pierce (27) | Paul Pierce (10) | Paul Pierce (4) | Amway Arena 17,461 | 36–9 |
| 46 | January 25 | Dallas | W 124–100 (OT) | Eddie House , Ray Allen , Kevin Garnett (23) | Rajon Rondo (7) | Rajon Rondo (14) | TD Banknorth Garden 18,624 | 37–9 |
| 47 | January 28 | Sacramento | W 119–100 (OT) | Eddie House (28) | Tony Allen , Kevin Garnett (8) | Rajon Rondo (9) | TD Banknorth Garden 18,624 | 38–9 |