USS Nereus (AC-10) was one of four Proteus-class colliers built for the United States Navy during World War I. Named for Nereus, an aquatic deity from Greek mythology, she was the second U.S. Naval vessel to bear the name. Nereus was laid down on 4 December 1911, and launched on 26 April 1913 by the Newport News Shipbuilding and Dry Dock Company, Newport News, Virginia, and commissioned on 10 September 1913.