Nanhai may refer to:Nanhai, the Chinese name for the South China Sea, one of the Four Seas Nanhai Commandery, the former Chinese administration over Liangguang Nanhai, the Chinese name for the South China Sea Islands The Nanhai I, a Chinese wreck from the Southern Song dynasty raised in 2007 Nanhai, a lake in the Zhongnanhai complex in Beijing Nanhai Academy, a collection of cultural and educational facilities located on Nanhai Road in Taipei, Taiwan Nanhai District, Foshan, Guangdong Nanhai, Hubei, town in Songzi, Hubei Nanhai Township, subdivision of Pingtan County, Fujian Nanhai Subdistrict, Maoming, in Maogang District, Maoming, Guangdong Nanhai Subdistrict, Zhumadian, in Yicheng District, Zhumadian, Henan Nanhai, the Chinese name for the star Xi Serpentis