There are seven major islands within Mu Koh Chang National Park. They are: Koh Chang (which is the biggest and popular island for tourism), Koh Mak, Koh Mai Si Yai, Koh Khlum, Koh Rang, koh Kood and Koh Wai. With the exemption of Koh Chang Island, the five major islands are situated in the southern side of the park and of Koh Chang and they are all surrounded by waters of the gulf.
The northern side of the park has the least number of islands. You can only find two small islands: Koh Chang Noi and Koh Mapring. They are often visited due to their secluded location which offers quiet private tours. The islands of Koh Suwan, Koh Yuak and Koh Man Nok are situated facing the coastal side of Koh Chang. These are favorite locations of tourists because of their proximity to the hotels and resorts are located on the western beachfront of Koh Chang Island. The southwestern side of the island of Koh Chang which is mostly identified as fishing communities, the islands of Koh Hai Chang, Koh Khlum, Koh Wai, Koh Krabun, Koh Chang Tai, Koh Mapring, Koh Lao Khlang, Koh Krabun and Koh Wai are found. These islands are considered rich in marine life and excellent sites for scuba diving and snorkeling. At the southernmost and southeastern of Koh Chang the islands of Koh Lom, Koh Krabung, Koh Falami Nuea, Koh Mo Nai, Koh Mo Nok, Koh Mai Si Lek, Koh Mai Si Yai, Koh Chan Noi, Koh Chan and Koh Bai Dang are situated. These islands are favorite destinations for marine adventures and beautiful beaches and sceneries. The islands of Koh Bai Tang, Koh Thong Lang, Koh Mapring, Koh Klang, Koh Rang, Koh Tun, Koh Rayang Nok, Koh Kham, Koh Ma and Koh Kut are situated in far south of Koh Chang. They are frequently visited by tourists in island hopping expeditions. They are accessible by kayak and motorized boats as they relatively near from each other except Koh Kut which is located at the farthest side of the national park.
Viewing the satellite map of the whole Mu Koh Chang National Park, you can directly notice the chain of the islands in parallel to the coastal lines of the Trat Province and the borders of Cambodia to the southeastern side of Mu Koh Chang National Park. The physical chain created by the big and small islands comprising the park conveys a message of connectivity which time has linked them altogether.