Jean-Pierre Kalfon (born 30 October 1938) was a teenage runaway who began a successful career as a stage and screen actor in the 1960s. He appeared in a number of films directed by Claude Lelouch including Une fille et des fusils (1965), played the leader of the cannibal revolutionaries in Jean-Luc Godard’s Week End (1967), and the theatre director whose marriage is disintegrating in Jacques Rivette’s L’Amour fou (1969). He has also worked with Philippe Garrel, Barbet Schroeder, Francois Truffaut and Claude Chabrol.