Jean-Pierre Léaud (born May 28, 1944) is a French actor, best known for playing Antoine Doinel in François Truffaut's series of films about that character, beginning with The 400 Blows (1959). He also worked with Aki Kaurismäki, Pier Paolo Pasolini, Jacques Rivette, and Tsai Ming-liang. He is a significant figure of the French New Wave, having appeared in eight films by Jean-Luc Godard and seven by François Truffaut.
From Wikipedia
Jean-Pierre Léaud, ComM (French: [ʒɑ̃pjɛʁ le.o]; born 28 May 1944) is a French actor best known for being an important figure of the French New Wave and his portrayal of Antoine Doinel in a series of films by François Truffaut, beginning with The 400 Blows (1959). He has worked with Jean-Luc Godard, Agnès Varda, and Jacques Rivette, as well as other notable directors such as Jean Cocteau, Pier Paolo Pasolini, Bernardo Bertolucci, Catherine Breillat, Jerzy Skolimowski, and Aki Kaurismäki.