2013 US Open – Girls' singles

Samantha Crawford was the defending champion having won the 2012 event, but chose not to compete in 2013.

Ana Konjuh won the tournament, defeating Tornado Alicia Black in the final, 3–6, 6–4, 7–6(8–6).

Seeds
• # Belinda Bencic (quarterfinals)

• # Ana Konjuh (champion)

• # 🇨🇿 Kateřina Siniaková (quarterfinals)

• # 🇨🇿 Barbora Krejčíková (second round)

• # 🇷🇺 Darya Kasatkina (second round)

• # 🇺🇸 Taylor Townsend (withdrew)

• # 🇩🇪 Antonia Lottner (semifinals)

• # 🇧🇪 Elise Mertens (second round)

• # 🇷🇺 Varvara Flink (first round)

• # 🇺🇸 Louisa Chirico (quarterfinals)

• # 🇯🇵 Mayo Hibi (semifinals)

• # Camila Giangreco Campiz (third round)

• # 🇬🇧 Katy Dunne (second round)

• # 🇺🇦 Anhelina Kalinina (third round)

• # 🇹🇷 İpek Soylu (first round)

• # Hsu Ching-wen (first round)

• # 🇷🇸 Nina Stojanović (first round)