Qionghai is one of the seven county-level cities of Hainan province, China. Although called a "city", Qionghai refers to a large land area in Hainan - an area which was once a county. Within this area is the main city, Qionghai City. It is located in the east of the island at the mouth of the Wanquan River, 86 kilometres (53 mi) from the provincial capital of Haikou. It has an area of 1,692 square kilometres (653 sq mi) and in 2010, it had a population of 483,217 people.

A county-level municipality, county-level city or county city, formerly known as prefecture-controlled city, is a county-level administrative division of the People's Republic of China. County-level cities have judicial but no legislative rights over their own local law and are usually governed by prefecture-level divisions, but a few are governed directly by province-level divisions.