Lise Vaillancourt (born July 5, 1954) is a Quebec writer.
She was born in Montreal and studied philosophy at the Cégep Édouard-Montpetit and theatre and film at the Université du Québec à Montréal and the Université Laval. From 1975 to 1979, she apprenticed as a mime at the Théâtre national du Mime du Québec. From 1982 to 1987, she was an artistic director for the Théâtre expérimental des femmes and a co-founder of Théâtre Espace Go. In 1991, Vaillancourt became artistic director for the Théâtre de la Ville de Longueui. She also wrote for the publications Le Devoir, Jeu and Trois.[1] She has been artist-in-residence at the Art Studio at the Banff Centre, at the Festival des francophonies en Limousin and at the Chartreuse de Villeneuve-lès-Avignon. She has served as president of the Centre des auteurs dramatiques du Québec.[2]