Koh Kood lies 82 kilometers off the coast of Trat Province on the Gulf of Thailand, and it is the last unspoilt Island in the Gulf of Thailand', Koh Kood (or Ko Kut) is the farthest island from the coast of Trat. Its size ranks as the fourth of all Thailand's islands or the second to Ko Chang in Trat. The island covers an area of approximately 105 sq. kilometers. It is 25 km in length and 12 km in width.

Koh Kut natural features include mountains and plains where many streams originate, and some become waterfalls. One famous waterfall is Nam Tok Khlong Chao flows all throughout the year.

It is an ideal place for swimming, consisting of 3 tiers; the upper two tiers are running streams and the lower one is a large pond. In addition there are several beaches with crystal-clear sea popular among visitors suach as Taphao Beach, Khlong Chao Beach, Khlong Hin Beach, Phrao Beach, etc.

So far just a few simple accommodations with a private atmosphere are available for visitors at the inner sea of Ko Kut, and the other two islands, Ko Rat and Ko Mai Si, opposite to Ko Kut.