Merrimack College competes in NCAA Division II (with football).
| Name | Participants | |
|---|---|---|
| Men | Women | |
| Baseball | 35 | 0 |
| Basketball | 15 | 17 |
| All Track Combined | 115 | 154 |
| Field Hockey | 0 | 22 |
| Football | 97 | 0 |
| Golf | 0 | 9 |
| Ice Hockey | 27 | 21 |
| Lacrosse | 39 | 24 |
| Rowing | 0 | 17 |
| Soccer | 33 | 64 |
| Softball | 0 | 27 |
| Swimming | 0 | 10 |
| Tennis | 10 | 9 |
| Volleyball | 0 | 13 |