Yunfu, formerly romanized as Wanfow, and historically known as Dong'an, which was formerly romanized as Tong On, from 1578 to 1913, is a prefecture-level city in western Guangdong province, People's Republic of China. It borders Zhaoqing to the north, Foshan to the east, Jiangmen to the southeast, Yangjiang to the south, Maoming to the southwest, and the autonomous region of Guangxi to the west.