Wan'an Zhou or Wan'an Prefecture was a zhou (prefecture) in imperial China in modern southeastern Hainan, China. It existed from 662 to 1368, but between 742 and 757 it was known as Wan'an Commandery, and between 757 and 758 as Wanquan Commandery.[3] The Song dynasty made it a military prefecture in 1074.
Wan'an Prefecture administered the following counties (縣) through history:
Wan'an (萬安), roughly modern northern Wanning.[4] During Southern Han and Northern Song dynasty it was known as Wanning (萬寧), but after 1136 its name was changed back to Wan'an.[5]
Shi Weile, ed. (2005). Zhongguo Lishi Diming Da Cidian (中国历史地名大词典) [Large Dictionary of Chinese Historical Place Names] (in Chinese). China Social Sciences Press. ISBN7-5004-4929-1.