2018 Challenger Banque Nationale de Saguenay – Doubles

Bianca Andreescu and Carol Zhao were the defending champions, but Zhao chose not to participate. Andreescu played alongside Carson Branstine, but lost in the quarterfinals to Elitsa Kostova and Katherine Sebov.

Tara Moore and Conny Perrin won the title after defeating Sharon Fichman and Maria Sanchez 6–0, 5–7, [10–7] in the final.

Seeds
• # 🇬🇧 Naomi Broady / 🇯🇵 Ayaka Okuno (first round)

• # 🇺🇸 Usue Maitane Arconada / 🇺🇸 Jacqueline Cako (first round)

• # 🇬🇧 Tara Moore / Conny Perrin (champions)

• # 🇫🇷 Manon Arcangioli / 🇫🇷 Shérazad Reix (quarterfinals)