2009 French Open – Boys' singles

Yang Tsung-hua was the defending champion, but did not compete in the Juniors this year.

Daniel Berta won in the final 6–1, 3–6, 6–3, against Gianni Mina.

Seeds
• # Huang Liang-chi (first round)

• # 🇦🇺 Bernard Tomic (third round)

• # 🇦🇷 Andrea Collarini (quarterfinals)

• # 🇯🇵 Shuichi Sekiguchi (second round)

• # Julen Uriguen (first round)

• # 🇫🇷 Julien Obry (first round)

• # 🇺🇸 Denis Kudla (first round)

• # Hsieh Cheng-peng (first round)

• # 🇦🇷 Facundo Arguello (first round)

• # 🇦🇷 Agustín Velotti (third round)

• # 🇫🇷 Gianni Mina (final)

• # 🇻🇪 David Souto (third round)

• # 🇺🇸 Tennys Sandgren (third round)

• # 🇩🇪 Dominik Schulz (semifinals)

• # 🇧🇷 José Pereira (second round)

• # 🇧🇪 Yannik Reuter (third round)