Yángpǔ Economic Development Zone (洋浦经济开发区) is an area of the Yangpu Peninsula, Hainan, China. This zone, covering 31 km², contains a port, oil refinery, petroleum commercial reserve base, power station, and the town of Yangpu. The area, Hainan's largest economic zone, is located on the northwestern coast of the island, about 140 km. west of Haikou city, the capital of the province.