2017 US Open – Boys' singles

Félix Auger-Aliassime was the defending champion, but chose not to participate.

Wu Yibing won the title, defeating Axel Geller in the final, 6–4, 6–4.

Seeds
• # 🇦🇷 Axel Geller (final)

• # 🇨🇳 Wu Yibing (champion)

• # 🇦🇹 Jurij Rodionov (second round)

• # 🇯🇵 Yuta Shimizu (first round)

• # 🇷🇸 Marko Miladinović (second round)

• # 🇮🇱 Yshai Oliel (second round)

• # 🇺🇸 Trent Bryde (second round)

• # Hsu Yu-hsiou (second round)

• # 🇨🇿 Michael Vrbenský (first round)

• # 🇦🇷 Sebastián Báez (quarterfinals)

• # 🇺🇸 Oliver Crawford (quarterfinals)

• # 🇺🇸 Patrick Kypson (first round)

• # 🇺🇸 Sebastian Korda (second round)

• # 🇧🇷 Thiago Seyboth Wild (first round)

• # Duarte Vale (third round)

• # 🇦🇷 Juan Pablo Grassi Mazzuchi (first round)

Seeds
• # 🇬🇧 Barnaby Smith (first round)

• # 🇹🇷 Ergi Kırkın (qualifying competition)

• # 🇷🇴 Ștefan Paloși (qualifying competition)

• # 🇦🇷 Thiago Agustín Tirante (first round)

• # 🇫🇷 Clément Tabur (qualified)

• # 🇬🇧 George Loffhagen (qualified)

• # 🇧🇷 Igor Gimenez (qualifying competition)

• # 🇹🇷 Kaya Göre (first round)

• # 🇨🇴 Sergio Luis Hernández Ramírez (qualified)

• # Jakub Paul (qualified)

• # 🇮🇹 Lorenzo Musetti (qualifying competition)

• # 🇮🇹 Mattia Frinzi (first round)

• # 🇯🇵 Taisei Ichikawa (first round)

• # 🇮🇳 Nitin Kumar Sinha (first round)

• # 🇬🇧 Jack Draper (qualified)

• # 🇲🇽 Alex Hernández (qualifying competition)

Qualifiers
• # Jesper de Jong

• # Jakub Paul

• # 🇨🇴 Sergio Luis Hernández Ramírez

• # 🇺🇸 Govind Nanda

• # 🇫🇷 Clément Tabur

• # 🇬🇧 George Loffhagen

• # 🇬🇧 Jack Draper

• # 🇩🇴 Nick Hardt