2009 Brasil Open – Singles

Nicolás Almagro was the defending champion, but lost in the quarterfinals to Frederico Gil.

In the final, Tommy Robredo defeated Thomaz Bellucci, 6–3, 3–6, 6–4.

Seeds
• # 🇪🇸 Nicolás Almagro (quarterfinals)

• # 🇪🇸 Tommy Robredo (champion)

• # 🇪🇸 Albert Montañés (first round)

• # 🇦🇷 José Acasuso (semifinals)

• # 🇪🇸 Marcel Granollers (second round)

• # 🇦🇷 Eduardo Schwank (quarterfinals)

• # 🇫🇷 Nicolas Devilder (second round)

• # 🇮🇹 Potito Starace (first round)

Seeds
• # 🇦🇷 Sergio Roitman (second round)

• # 🇦🇷 Leonardo Mayer (second round)

• # 🇪🇸 Rubén Ramírez Hidalgo (qualifying competition)

• # 🇪🇸 Santiago Ventura Bertomeu (second round)

• # 🇫🇷 Olivier Patience (second round)

• # Rui Machado (qualified)

• # 🇷🇸 Boris Pašanski (second round)

• # 🇪🇸 Daniel Muñoz de la Nava (second round)

Qualifiers
• # 🇧🇷 Daniel Dutra da Silva

• # 🇧🇷 Caio Zampieri

• # 🇵🇱 Łukasz Kubot

• # Rui Machado