Diane Dufresne, CQ (born 30 September 1944 in Montreal, Quebec, Canada) is a singer and painter, and has sung a number of classics of Quebec repertoire of popular songs.

Dufresne lived in Paris from 1965 to 1967 where she studied voice with Jean Lumière and dramatic art with Françoise Rosay. While there, she performed in noted boîtes à chansons such as l'Écluse, l'Échelle de Jacob, and le Caveau de la Bolée.