2016 Challenger Banque Nationale de Granby – Men's singles

Vincent Millot was the defending champion, but lost in the second round to James McGee.

Frances Tiafoe won the title, defeating Marcelo Arévalo 6–1, 6–1 in the final.

Seeds
• #🇫🇷 Stéphane Robert (first round)

• #🇫🇷 Quentin Halys (first round)

• #🇮🇳 Saketh Myneni (first round)

• #🇺🇸 Frances Tiafoe (champion)

• #🇨🇴 Alejandro González (first round)

• #🇨🇴 Eduardo Struvay (first round, retired)

• #🇫🇷 Vincent Millot (second round)

• #🇫🇷 Grégoire Barrère (second round)