Henri Émile Sauvage (22 September 1842, Boulogne-sur-Mer – 3 January 1917, Boulogne-sur-Mer) was a French paleontologist, ichthyologist, and herpetologist. He was a leading expert on Mesozoic fish and reptiles.He worked as a curator at the Muséum d'Histoire Naturelle in Boulogne-sur-Mer, and published extensively on Late Jurassic dinosaurs and other vertebrates from the Boulonnais region of northern France.