1999 US Open – Girls' singles

Girls' singles
1999 US Open
Champion Lina Krasnoroutskaya
Runner-up Nadia Petrova
Score6–3, 6–2

Jelena Dokić was the defending champion, but did not complete in the Juniors this year.

Lina Krasnoroutskaya won the title, defeating Nadia Petrova in the final in what was the second all-Russian Girls' singles Grand Slam final. This win solidified her ranking to become the Year-End Junior World No. 1.