Koh Lanta is an island district off the west coast of Thailand. Like many other destinations in Krabi Province it is known for its diving and long white beaches. Koh Lanta is in fact a district consisting of several islands. The two largest are Koh Lanta Noi and Koh Lanta Yai. Although Koh Lanta Noi is inhabited, Koh Lanta Yai is the primary tourist destination and this article discusses Koh Lanta Yai.

Koh Lanta, located approximately 70km from Krabi Town is a large island 6km wide and over 30km long. The island has 9 attractive white sandy beaches, splendid scenery; coastlines have more than 70 small islands and plenty with forest, coral reefs and under water life. The geography of the island is typically mangroves; coral rimmed beaches; and rugged tree covered hills.