2018 Challenger Banque Nationale de Drummondville – Singles

Denis Shapovalov was the defending champion but chose not to defend his title.

Denis Kudla won the title after defeating Benjamin Bonzi 6–0, 7–5 in the final.

Seeds
• # 🇨🇦 Vasek Pospisil (semifinals)

• # Henri Laaksonen (second round)

• # 🇫🇷 Gleb Sakharov (first round, retired)

• # 🇬🇧 Liam Broady (first round)

• # 🇺🇸 Denis Kudla (champion)

• # 🇨🇦 Filip Peliwo (second round)

• # 🇺🇸 Evan King (quarterfinals)

• # 🇨🇦 Brayden Schnur (semifinals)