| Girls' Singles | |
|---|---|
| 2008 US Open | |
| Champion |
|
| Runner-up |
|
| Final score | 7–6(7–3), 6–1 |
Kristína Kučová was the defending champion, but did not compete in the juniors that year.
Coco Vandeweghe won the tournament, defeating Gabriela Paz in the final, 7–6(7–3), 6–1.