Jacques-Laurent Bost (6 May 1916, Le Havre – 21 September 1990, Paris) was a French journalist. He worked for the satirical newspaper Le Canard enchaîné, and was a friend of Jean-Paul Sartre, and of Simone de Beauvoir, who was his lover. He married Olga Kosakiewicz. Pierre Bost, mainly known as a screenwriter today, was Jacques-Laurent's brother.