2009 Copa Petrobras São Paulo – Singles

Paul Capdeville was the defending champion, but he was eliminated by Franco Ferreiro in the second round.

Thomaz Bellucci defeated Nicolás Lapentti 6–4, 6–4 in the final match.

Seeds
• # 🇧🇷 Thomaz Bellucci (champion)

• # 🇦🇷 Juan Ignacio Chela (quarterfinals)

• # Paul Capdeville (second round)

• # 🇪🇸 Santiago Ventura (semifinals, retired)

• # 🇪🇨 Nicolás Lapentti (final)

• # Rui Machado (second round)

• # Nicolás Massú (quarterfinals)

• # 🇧🇷 Thiago Alves (first round)