William Alexander Hammond was an American military physician and neurologist. During the American Civil War he was the eleventh Surgeon General of the United States Army (1862–1864) and the founder of the Army Medical Museum.

The Medical Corps (MC) of the U.S. Army is a staff corps of the U.S. Army Medical Department (AMEDD) consisting of commissioned medical officers – physicians with either an M.D. or a D.O. degree, at least one year of post-graduate clinical training, and a state medical license.