Michel Jacques Daniel Piccoli was the son of Henri Piccoli, violinist and Marcelle Expert-Bezançon (1892-1990), pianist and daughter of the French industrialist and politician Charles Expert-Bezançon. In 1954, Michel Piccoli married actress Éléonore Hirt with whom he had a daughter, Anne-Cordélia Piccoli. In 1966, he married the singer Juliette Gréco, then in 1978 the screenwriter Ludivine Clerc, with whom he adopted two children of Polish origin, Inord and Missia.
Placed in an establishment for problem children, the commitments of the young Piccoli, are made in opposition to his maternal grandfather, senator of the Third Republic, financier of the Radical Party, and important industrial painter, accused by the trade union left and by Georges Clemenceau, of having intoxicated his workmen through lead white which causes lead poisoning.
Michel Piccoli then trained as an actor first with Andrée Bauer-Théraud and then during Simon. After an appearance as an extra in "Sortilèges" by Christian-Jaque in 1945, Michel Piccoli made his film debut in "Le Point Du Jour" by Louis Daquin. In the theater he distinguished himself with the Renaud-Barrault and Grenier-Hussot companies as well as at the Théâtre de Babylone. Noticed in the film "French Cancan" in 1954, he continued on stage and worked with directors Jacques Audiberti, Jean Vilar, Jean-Marie Serreau, Peter Brook, Luc Bondy, Patrice Chéreau and André Engel, and became also know in popular TV movies. Having become an atheist afte…