See main article: 2023 Championnats Banque Nationale de Granby.
Kayla Day won the women's singles tournament at the 2023 Championnats Banque Nationale de Granby after defeating Katherine Sebov 6–4, 2–6, 7–5 in the final.[1]
Daria Kasatkina was the defending champion but chose not to defend her title.