2014 US Open – Boys' singles

Borna Ćorić was the defending champion, having won the event in 2013, but elevated to Men's Singles instead as a qualifier.

Omar Jasika won the title, defeating Quentin Halys in the final, 2–6, 7–5, 6–1.

Seeds
• # 🇷🇺 Andrey Rublev (quarterfinals)

• # 🇧🇷 Orlando Luz (second round)

• # 🇺🇸 Jared Donaldson (third round)

• # 🇺🇸 Stefan Kozlov (quarterfinals, retired)

• # 🇫🇷 Quentin Halys (final)

• # 🇺🇸 Francis Tiafoe (semifinals)

• # 🇰🇷 Lee Duck-hee (quarterfinals)

• # 🇷🇺 Roman Safiullin (third round)

• # 🇧🇷 Marcelo Zormann (third round)

• # 🇺🇸 Michael Mmoh (first round)

• # 🇯🇵 Jumpei Yamasaki (first round)

• # 🇯🇵 Naoki Nakagawa (first round)

• # 🇦🇷 Matías Zukas (first round)

• # 🇺🇸 Taylor Harry Fritz (third round)

• # 🇦🇷 Francisco Bahamonde (first round)

• # 🇵🇪 Nicolás Álvarez (first round)