| month | day | visitor | score | home | score |
|---|
| November | 2, 1988 | Celtics | 108 | Blazers | 106 |
| November | 3, 1988 | Bulls | 86 | Celtics | 98 |
| November | 4, 1988 | Celtics | 105 | Bulls | 103 |
| November | 7, 1988 | Celtics | 102 | Bulls | 108 |
| November | 12, 1988 | Celtics | 97 | Hornets | 89 |
| November | 14, 1988 | Celtics | 88 | Hornets | 101 |
| November | 15, 1988 | Magic | 101 | Celtics | 133 |
| November | 18, 1988 | Hornets | 84 | Celtics | 103 |
| November | 19, 1988 | Bulls | 97 | Celtics | 94 |
| November | 21, 1988 | Celtics | 121 | Heat | 97 |
| November | 24, 1988 | Celtics | 132 | Bullets | 109 |
| November | 29, 1988 | Blazers | 122 | Celtics | 112 |
| November | 30, 1988 | Cavaliers | 95 | Celtics | 116 |
| December | 4, 1988 | Celtics | 100 | Suns | 108 |
| December | 5, 1988 | Celtics | 101 | Rockets | 95 |
| December | 14, 1988 | Jazz | 102 | Celtics | 112 |
| December | 17, 1988 | Celtics | 108 | 76ers | 109 |
| December | 18, 1988 | 76ers | 96 | Celtics | 113 |
| December | 21, 1988 | Knicks | 104 | Celtics | 95 |
| December | 22, 1988 | Celtics | 96 | Hornets | 89 |
| December | 24, 1988 | Heat | 95 | Celtics | 109 |
| December | 26, 1988 | Pacers | 110 | Celtics | 102 |
| December | 28, 1988 | Suns | 125 | Celtics | 105 |
| December | 30, 1988 | Bucks | 111 | Celtics | 113 |
| January | 2, 1989 | 76ers | 117 | Celtics | 129 |
| January | 5, 1989 | Bullets | 102 | Celtics | 112 |
| January | 7, 1989 | 76ers | 84 | Celtics | 109 |
| January | 16, 1989 | Celtics | 101 | Cavaliers | 110 |
| January | 17, 1989 | Celtics | 102 | Bulls | 112 |
| January | 20, 1989 | Bulls | 100 | Celtics | 105 |
| January | 23, 1989 | Celtics | 107 | Kings | 115 |
| January | 26, 1989 | Rockets | 104 | Celtics | 110 |
| January | 29, 1989 | Celtics | 101 | Magic | 99 |
| January | 31, 1989 | Hornets | 96 | Celtics | 95 |
| February | 5, 1989 | Bucks | | Celtics | |
| February | 8, 1989 | Celtics | | Bucks | |
| February | 10, 1989 | Cavaliers | | Celtics | |
| February | 14, 1989 | Celtics | | Heat | |
| February | 16, 1989 | Celtics | | Knicks | |
| February | 17, 1989 | Celtics | | Magic | |
| February | 19, 1989 | Magic | | Celtics | |
| February | 20, 1989 | Celtics | | Hornets | |
| February | 22, 1989 | Pistons | | Celtics | |
| February | 23, 1989 | Pacers | | Celtics | |
| February | 25, 1989 | Lakers | | Celtics | |
| February | 27, 1989 | Kings | | Celtics | |
| February | 28, 1989 | Magic | | Celtics | |
| March | 2, 1989 | Hornets | | Celtics | |
| March | 3, 1989 | Pacers | | Celtics | |
| March | 4, 1989 | Celtics | | Cavaliers | |
| March | 5, 1989 | Celtics | | Heat | |
| March | 6, 1989 | Celtics | | Pacers | |
| March | 7, 1989 | Celtics | | 76ers | |
| March | 9, 1989 | Celtics | | Knicks | |
| March | 11, 1989 | Celtics | | Bucks | |
| March | 14, 1989 | Celtics | | Pacers | |
| March | 17, 1989 | Celtics | | Warriors | |
| March | 18, 1989 | Celtics | | Magic | |
| March | 19, 1989 | Celtics | | Lakers | |
| March | 21, 1989 | Celtics | | Knicks | |
| March | 22, 1989 | Cavaliers | | Celtics | |
| March | 25, 1989 | Spurs | | Celtics | |
| March | 26, 1989 | Heat | | Celtics | |
| March | 28, 1989 | Celtics | | Knicks | |
| March | 30, 1989 | Celtics | | Pistons | |
| March | 31, 1989 | Celtics | | Heat | |
| April | 3, 1989 | Celtics | | Clippers | |
| April | 4, 1989 | Sonics | | Celtics | |
| April | 5, 1989 | Celtics | | Jazz | |
| April | 9, 1989 | Cavaliers | | Celtics | |
| April | 10, 1989 | 76ers | | Celtics | |
| April | 13, 1989 | Warriors | | Celtics | |
| April | 22, 1989 | Celtics | | Bucks | |
| April | 23, 1989 | Pistons | | Celtics | |
| April | 27, 1989 | Celtics | | Sonics | |
| April | 29, 1989 | Celtics | | Pistons | |
| April | 30, 1989 | Pistons | | Celtics | |
| May | 1, 1989 | Pacers | | Celtics | |
| May | 3, 1989 | Clippers | | Celtics | |
| May | 4, 1989 | Celtics | | Spurs | |
| May | 5, 1989 | Knicks | | Celtics | |
| May | 6, 1989 | Celtics | | Magic | |