• Koh Chang is an amphoe in Trat Province, Thailand. It is on the Gulf of Thailand's eastern seaboard, 310 km from Bangkok, near the border with Cambodia.
• It is the country's third largest island, after Phuket and Ko Samui, and the largest island in the Mu Ko Chang National Park archipelago.
• The name means "Elephant Island", and comes from its elephant-shaped headland. Despite the presence of elephants on the island, they are not indigenous. At present, there are nine villages on the island.