2018 French Open – Boys' singles

Tseng Chun-hsin won the boys' singles tennis title at the 2018 French Open, defeating Sebastián Báez in the final, 7–6(7–5), 6–2.

Alexei Popyrin was the defending champion, but was no longer eligible to participate in junior tournaments.

Seeds
• 🇦🇷 Sebastián Báez (final)

• 🇺🇸 Sebastian Korda (semifinals)

• 🇩🇪 Rudolf Molleker (first round)

• Tseng Chun-hsin (champion)

• 🇫🇷 Hugo Gaston (first round)

• 🇰🇿 Timofei Skatov (third round)

• 🇧🇬 Adrian Andreev (third round)

• 🇧🇷 Thiago Seyboth Wild (semifinals)

• 🇨🇴 Nicolás Mejía (quarterfinals)

• 🇨🇿 Dalibor Svrčina (first round)

• 🇺🇸 Tristan Boyer (third round)

• 🇫🇷 Clément Tabur (first round)

• 🇬🇧 Aidan McHugh (first round)

• 🇦🇷 Juan Manuel Cerúndolo (first round)

• 🇦🇷 Facundo Díaz Acosta (first round)

• 🇺🇸 Drew Baird (first round)

Seeds
• # 🇺🇸 Tyler Zink (qualified)

• # 🇩🇪 Leopold Zima (first round)

• # 🇧🇷 Mateus Alves (qualified)

• # 🇺🇸 Emilio Nava (first round)

• # 🇫🇮 Otto Virtanen (first round)

• # 🇵🇱 Wojciech Marek (qualified)

• # 🇦🇷 Alejo Lorenzo Lingua Lavallén (first round)

• # 🇺🇿 Sergey Fomin (qualified)

• # 🇫🇷 Titouan Droguet (qualifying competition)

• # 🇺🇸 Govind Nanda (qualifying competition)

• # 🇰🇿 Dostanbek Tashbulatov (qualifying competition)

• # 🇧🇷 Igor Gimenez (first round)

• # 🇷🇺 Alexandr Binda (first round)

• # Admir Kalender (qualified)

• # 🇬🇧 Jacob Fearnley (first round)

• # 🇮🇳 Siddhant Banthia (first round)

Qualifiers
• # 🇺🇸 Tyler Zink

• # Admir Kalender

• # 🇧🇷 Mateus Alves

• # 🇪🇸 Carlos Sánchez Jover

• # 🇫🇷 Luka Pavlovic

• # 🇵🇱 Wojciech Marek

• # 🇫🇷 Kyrian Jacquet

• # 🇺🇿 Sergey Fomin