Haitang Bay (simplified Chinese: 海棠湾; traditional Chinese: 海棠灣; pinyin: Hǎitáng Wān) is one of the five major bays in Sanya, Hainan Province, China.
This 42.8 km beach is located in Haitangwan Town, Sanya, and Yingzhou Town, Lingshui. To its south are Yalong Bay and Wuzhizhou Island.
A number of resort hotels are located along the beach. Atlantis Sanya opened in 2018. The resort cost $1.74 USD billion dollars. The total area is 540,000 square metres and has 1,314 hotel rooms.