André Gagnon O.C. (born 1 August 1942 in St-Pacôme-de-Kamouraska, Quebec, Canada) is a Canadian musician. He shifted from a classical musical style to a more contemporary style in the mid-1970s with albums such as Neiges. André Gagnon has also composed music for many artists, such as Diane Dufresne (Le 304), Renée Claude (Je suis une femme d'aujourd'hui, Ballade pour mes vieux jours) and Nicole Martin (Mannequin).