Alexandra Stewart (Montréal, 1939) is a Canadian actress known for her long career in international cinema, particularly French cinema. She emerged in the 1960s, associated with the Nouvelle Vague, thanks to her ethereal elegance and her ability to portray complex and sophisticated characters.

Among her most celebrated performances are the intense Valérie in Costa-Gavras's *Z* (1969), which earned her widespread recognition, and Golly in John Huston's sumptuous adventure *The Man Who Would Be King* (1975). She has collaborated with directors such as François Truffaut and Claude Chabrol, often portraying independent women, at times enigmatic or vulnerable. Her filmography is extensive and ranges from drama to thriller, solidifying her image as a versatile and refined actress.