2003 US Open – Boys' singles

Boys' singles
2003 US Open
Champion Jo-Wilfried Tsonga
Runner-up Marcos Baghdatis
Score7–6(7–4), 6–3

Richard Gasquet was the defending champion, but did not compete in the juniors that year.

Jo-Wilfried Tsonga won the tournament, defeating Marcos Baghdatis in the final, 7–6(7–4), 6–3.