2019 Challenger Banque Nationale de Granby – Women's singles

Julia Glushko was the defending champion, but chose not to participate.

Lizette Cabrera won the title, defeating Leylah Annie Fernandez in the final, 6–1, 6–4.

Seeds
• # 🇯🇵 Nao Hibino (second round)

• # 🇨🇦 Rebecca Marino (first round, retired)

• # 🇺🇸 Francesca Di Lorenzo (quarterfinals)

• # 🇺🇸 Sachia Vickery (second round)

• # 🇫🇷 Jessika Ponchet (withdrew)

• # 🇨🇦 Katherine Sebov (semifinals)

• # 🇦🇺 Maddison Inglis (quarterfinals)

• # 🇦🇺 Olivia Rogowska (withdrew)

• # 🇯🇵 Risa Ozaki (first round, retired)

• # 🇯🇵 Momoko Kobori (first round)