2012 Challenger Banque Nationale de Granby – Men's singles

Édouard Roger-Vasselin was the defending champion but decided not to participate. Vasek Pospisil defeated Igor Sijsling in the final 7–6(7–2), 6–4.

Seeds
• # 🇨🇦 Vasek Pospisil (champion)

• # Igor Sijsling (final)

• # 🇨🇦 Frank Dancevic (second round)

• # 🇹🇭 Danai Udomchoke (semifinals)

• # 🇧🇪 Maxime Authom (quarterfinals)

• # 🇦🇺 James Duckworth (quarterfinals)

• # 🇨🇦 Érik Chvojka (first round)

• # 🇮🇹 Thomas Fabbiano (quarterfinals)