2013 Challenger Banque Nationale de Granby – Men's singles

Vasek Pospisil was the defending champion but chose to compete at the 2013 Claro Open Colombia.

Frank Dancevic defeated first seed Lukáš Lacko 6–4, 6–7(4–7), 6–3 in the final.

Seeds
• # 🇸🇰 Lukáš Lacko (final)

• # 🇫🇷 Nicolas Mahut (second round)

• # 🇯🇵 Tatsuma Ito (quarterfinals)

• # 🇧🇪 Maxime Authom (first round)

• # 🇦🇺 Matt Reid (second round)

• # 🇨🇦 Frank Dancevic (champion)

• # 🇯🇵 Hiroki Moriya (semifinals)

• # 🇨🇦 Steven Diez (first round)