Jean Piat (23 September 1924 – 18 September 2018) was a French actor and writer.

Piat was born in Lannoy, Nord. He enlisted in the Comédie-Française on 1 September 1947, and became a member on 1 January 1953. He left the Comédie-Française on 31 December 1972, and became an honorary member the following day. He was an officer in the Légion d'honneur and the Ordre des Arts et des Lettres, and a grand officer in the Ordre national du Mérite. He was married to actress Françoise Engel (who died in 2005), and was a professor in the dramatic arts of the Simon Course.