Jean Cau (8 July 1925, in Bram, Aude - 18 June 1993) was a French writer and journalist.
Born in Bram, Aude, he was secretary to Jean-Paul Sartre, after which he was a journalist and reporter for l'Express, Figaro, and Paris-Match. In 1961, he was awarded the Prix Goncourt for The Mercy of God.