2011 Kremlin Cup – Men's singles

Viktor Troicki was the defending champion, but his compatriot Janko Tipsarević defeated him in the first all-Serbian final in tennis history 6–4, 6–2.

Seeds
The top four seeds receive a bye into the second round. • # 🇷🇸 Janko Tipsarević (champion)

• # 🇷🇸 Viktor Troicki (final)

• # 🇺🇦 Alexandr Dolgopolov (second round)

• # 🇷🇺 Nikolay Davydenko (semifinals)

• # 🇺🇸 Alex Bogomolov Jr. (quarterfinals)

• # 🇷🇺 Dmitry Tursunov (quarterfinals)

• # 🇱🇺 Gilles Müller (second round)

• # 🇮🇹 Andreas Seppi (second round)