2011 Košice Open – Singles

Rubén Ramírez Hidalgo was the defending champion; however, he lost to Evgeny Donskoy in the second round.

Simon Greul won the final against Victor Crivoi 6–2, 6–1.

Seeds
• # 🇪🇸 Rubén Ramírez Hidalgo (second round)

• # Rui Machado (first round)

• # 🇨🇿 Lukáš Rosol (semifinals)

• # 🇨🇿 Ivo Minář (first round, retired)

• # 🇩🇪 Simon Greul (champion)

• # 🇦🇷 Brian Dabul (first round)

• # 🇫🇷 David Guez (quarterfinals)

• # 🇰🇿 Yuri Schukin (first round)