Lortie is a French surname. Notable people with the surname include:
Andrew Lortie, French theologian
Bernard Lortie (born c. 1951), Canadian terrorist
Denis Lortie (born 1959), Canadian spree killer
Joseph Arthur Lortie (1869–1958), Canadian physician
Léon Lortie (1902–1985), Canadian chemist
Louis Lortie (born 1959), Canadian pianist
Marc Lortie (born 1948), Canadian diplomat