Jean Lorrain (August 9, 1855, Fécamp, Seine-Maritime – June 30, 1906), born Paul Duval, was a French poet and novelist of the Symbolist school.
Lorrain was a dedicated disciple of dandyism, and (for the times) openly gay. Lorrain wrote a number of collections of verse, including La forêt bleue (1883) and L'ombre ardente, (1897). He is also remembered for his decadent novels and short stories, such as Monsieur de Phocas (1901) and Histoires des masques (1900), as well as for one of his best novels, Sonyeuse, which he links to portraits exhibited by Antonio de La Gandara in 1893. He also wrote the libretto to Pierre de Bréville's 1910 opera Éros vainqueur.