Ko Tao (also often Koh Tao, Thai: เกาะเต่า, Thai pronunciation: [kɔ̀ʔ tàw], lit. “Turtle Island”) is an island in Thailand located near the western shore of the Gulf of Thailand. It covers an area of about 21 km². Administratively it forms a tambon within the district (Amphoe) Ko Pha Ngan of Surat Thani Province. As of 2006 its official population is 1,382. The main settlement is Ban Mae Hat.