Ko Mak (Thai: เกาะหมาก, pronounced [kɔ̀ʔ màːk]) is a small island of Trat Province, Thailand. This island is named after the Areca nut (หมาก).
Ko Mak has 27 km coastline, many long sand beaches, a few hills and it is about 16 km² in area.
On low tide, it is possible to walk to Ko Kham, which is a smaller island less than 1 km northwest from Ko Mak. Ko Phi, also north west from Ko Mak but southwest from Ko Kham, is not occupied.
Ko Mak is perfect for relaxing and soaking up the suns on beautiful, white sand beach and swimming in the stunning clear blue water.
Because the island is small and flat its perfect for exploring and getting close to nature, bicycle through coconut plantations along the coastline.
There are about 25 resorts on Ko Mak. Both Ko Kham and Ko Phi can be easily reached with sea kayak from the resorts on north west coast of Ko Mak. Both little islands have nice places to snorkel, depending on the direction of wind.