2018 Challenger Banque Nationale de Saguenay – Singles

Gréta Arn was the defending champion, but chose not to participate.

Katherine Sebov won the title, defeating Quirine Lemoine in the final, 7–6(12–10), 7–6(7–4).

Seeds
• # 🇺🇦 Kateryna Kozlova (quarterfinals)

• # Conny Perrin (quarterfinals)

• # Richèl Hogenkamp (quarterfinals)

• # 🇬🇧 Naomi Broady (first round)

• # 🇧🇬 Elitsa Kostova (first round)

• # 🇫🇷 Jessika Ponchet (quarterfinals)

• # 🇨🇦 Bianca Andreescu (semifinals, retired)

• # 🇧🇪 Kimberley Zimmermann (first round)