Catherine Léger (born 1980) is a Canadian playwright and screenwriter from Quebec.A graduate of the National Theatre School of Canada, she won the Prix Gratien-Gélinas in 2006 for her theatrical play Voiture américaine. Her subsequent plays have included Opium_37 (2010), Princesses (2011), J'ai perdu mon mari (2015), Filles en liberté (2017) and Baby-sitter (2017).She wrote for the television series Au secours de Béatrice, Marche à l'ombre and Les invisibles, and wrote the screenplays for the films The Little Queen (La petite reine) and Slut in a Good Way (Charlotte a du fun). She won the Canadian Screen Award for Best Original Screenplay at the 7th Canadian Screen Awards in 2019 for Slut in a Good Way.