2013 Proton Malaysian Open – Singles

João Sousa won the title, defeating Julien Benneteau 2–6, 7–5, 6–4 in the final. He saved a championship point in the second set and became the first player from Portugal to win an ATP title.

Juan Mónaco was the defending champion, but withdrew before the event started.

Seeds
• # 🇪🇸 David Ferrer (quarterfinals)

• # Stanislas Wawrinka (semifinals)

• # 🇪🇸 Nicolás Almagro (second round)

• # 🇦🇹 Jürgen Melzer (semifinals)

• # 🇫🇷 Julien Benneteau (final)

• # 🇷🇺 Dmitry Tursunov (quarterfinals)

• # 🇨🇦 Vasek Pospisil (second round)

• # 🇷🇺 Nikolay Davydenko (first round)

Seeds
• # 🇺🇸 Michael Russell (qualifying competition, retired)

• # 🇮🇳 Somdev Devvarman (qualified)

• # 🇺🇸 Rajeev Ram (qualified)

• # 🇮🇹 Matteo Viola (qualified)

• # 🇩🇪 Mischa Zverev (qualified)

• # 🇯🇵 Tatsuma Ito (qualifying competition)

• # Rik de Voest (second round)

• # 🇨🇳 Zhang Ze (second round)

Qualifiers
• # 🇩🇪 Mischa Zverev

• # 🇮🇳 Somdev Devvarman

• # 🇺🇸 Rajeev Ram

• # 🇮🇹 Matteo Viola