Xieyang Island

Xieyang Island is a Chinese island in the Gulf of Tonkin, located 9 nmi southeast of Weizhou Island. Administratively, it, along with Weizhou Island, forms the town of Weizhou, in Haicheng District, Beihai, Guangxi.

It has an area of only 1.89 km² and is of volcanic origin. The island may be described as appearing like a goat with its front legs crouched, and so in ancient times was also called "斜羊島".

It is one of the tourist attractions of Beihai.

Along with Weizhou Island, waters around Xieyang Island was discovered in 2015 to be seasonally frequented by Bryde's whales, and the area has become the first acknowledged location among mainland coasts of China to have regular migrations of large cetaceans.