2011 MasterCard Tennis Cup – Women's singles

Aranza Salut was the defending champion, but chose not to participate.

Verónica Cepede Royg won the title, defeating Adriana Pérez 7–6(7–4), 7–5 in the final.

Seeds
• # 🇧🇷 Ana-Clara Duarte (quarterfinals)

• # 🇧🇷 Roxane Vaisemberg (quarterfinals)

• # Verónica Cepede Royg (champion)

• # 🇧🇷 Teliana Pereira (first round)

• # 🇦🇷 Mailen Auroux (first round)

• # 🇧🇷 Vivian Segnini (semifinals)

• # Andrea Koch Benvenuto (quarterfinals)

• # 🇦🇷 Andrea Benítez (quarterfinals)