2011 Proton Malaysian Open – Singles

Mikhail Youzhny was the defending champion but decided not to participate.

3rd seed Janko Tipsarević defeated Marcos Baghdatis 6–4, 7–5 to win his first ATP title in his fifth attempt.

Seeds
The top four seeds received a bye into the second round. • # 🇪🇸 Nicolás Almagro (quarterfinals)

• # 🇷🇸 Viktor Troicki (semifinals)

• # 🇷🇸 Janko Tipsarević (champion)

• # 🇦🇹 Jürgen Melzer (quarterfinals)

• # 🇷🇺 Nikolay Davydenko (quarterfinals, retired)

• # 🇺🇸 Alex Bogomolov Jr. (first round)

• # 🇷🇺 Dmitry Tursunov (quarterfinals)

• # 🇯🇵 Kei Nishikori (semifinals)