Where Koh Samui Located in the Gulf of Thailand, approximately 84 kilometers east of Surat Thani province, or approximately 700 kilometers south of Bangkok, is known as the coconut island Koh Samui is one of the attractions of the famous and most popular of the country Thailand. Has an area of 247 square kilometers, Koh Samui is the third largest island of Thailand after Phuket country and Koh Chang (Trat province) . In addition, the area of the island, lined up to 48 cycles, small islands group.