Weizhou Island is an island located in the waters of the Beibu Gulf, south of Beihai City in the Guangxi Zhuang Autonomous Region. It is the largest and youngest volcanic island in China. Situated in the central part of the Beibu Gulf, the island lies south of Beihai City, faces the Leizhou Peninsula to the east, sits adjacent to Xieyang Island to the southeast, looks across the sea toward Hainan Island to the south, and faces Vietnam to the west. Weizhou Island is currently under the jurisdiction of Haicheng District, Beihai City, and is organized as Weizhou Town.