USS Orizaba (ID-1536/AP-24) was a transport ship for the United States Navy in both World War I and World War II. She was the sister ship of Siboney but the two were not part of a ship class. In her varied career, she was also known as USAT Orizaba in service for the United States Army, as SS Orizaba in interwar civilian service for the Ward Line, and as Duque de Caxias (U-11) as an auxiliary in the Brazilian Navy after World War II.