Auguste Adolphe Marc Reynaud (7 May 1804, in Toulon – 4 February 1887, in Toulon) was a French naval surgeon and naturalist.As a naval surgeon, he obtained a "third-class" ranking in 1821.
Beginning in 1846, he served as chief surgeon, and in 1858 was named inspector general of the Bureau of Medicine and Surgery.
During the Franco-Prussian War he was tasked with the organization of naval ambulance services.He took part in several sea voyages during his career, most notably in 1827/28 aboard the Chevrette, from which he collected zoological specimens during trips to India, Burma and the Dutch East Indies.