The following is a list of inland islands of Cambodia. All islands mentioned are either situated in the Tonle Sap Lake, the Tonle Sap River or the Mekong River. Most islands considerably vary in size over the course of a year, as a result of heavy rains during the rainy season and widespread inundation of the Mekong basin. Names are romanized according to the UNGEGN United Nations Group of Experts on Geographical Names system.