2011 Zucchetti Kos Tennis Cup – Singles

Steve Darcis was the defending champion but decided not to participate.

Daniel Muñoz-de la Nava won this tournament, beating Nicolás Pastor 6–4, 2–6, 6–2 in the final.

Seeds
• # 🇫🇷 Éric Prodon (second round)

• # 🇩🇪 Dustin Brown (quarterfinals)

• # 🇨🇿 Jaroslav Pospíšil (first round)

• # 🇫🇷 Florent Serra (second round)

• # 🇮🇹 Simone Bolelli (quarterfinals)

• # Jesse Huta Galung (second round)

• # 🇩🇪 Björn Phau (withdrew due to back injury)

• # 🇸🇰 Martin Kližan (semifinals)