Wuzhishan is a county-level city in the highlands of Hainan Island, China. Although called a "city", Wuzhishan refers to a large land area in Hainan - an area which was once a county. Within this area is the main city seat, located beside Wuzhi Mountain, called Wuzhishan City. The city's total area is 1129 square kilometres, and its population is 115,000 people. Its postal code is 572200, and its district number is 0898.

Hainan is an island province of the People's Republic of China (PRC), consisting of the eponymous Hainan Island and various smaller islands in the South China Sea under the province's administration. It is the southernmost province of China, and the name means "south of the sea", reflecting the island's position south of the Qiongzhou Strait, which separates it from Leizhou Peninsula of the Chinese mainland.