Ko Phi From Wikipedia, the free encyclopedia Ko Phi[1] is a small uninhabited island near Ko Mak, in Trat Province, Thailand. It can be reached with a sea kayak from Ko Mak. Ko Phi has places to snorkel, depending on the direction of wind. It is located at the geographical coordinates 09°38′N 99°41′E. List of islands of Thailand References ↑ "The official website of Tourism Authority of Thailand". tourismthailand.org. Retrieved 18 December 2025. This Trat Province location article is a stub. You can help Wikipedia by expanding it.vte Related Articles