| Champ: | Borna Ćorić |
| Runner: |  Thanasi Kokkinakis |
| Score: | 3–6, 6–3, 6–1 |
See main article: 2013 US Open (tennis).
Filip Peliwo was the champion the previous year, but could not defend his title as he was no longer eligible to compete in junior tennis.
Borna Ćorić won the title, defeating Thanasi Kokkinakis in the final, 3–6, 6–3, 6–1.