Kaoh Pao River (Central Khmer: កោះប៉ោ, Thai: เกาะปอ; ; in Thai pronounced as /kɔ̀ʔ pɔː /), also Prek Khao Pao or Preaek Khao Pao,[1] is a river and estuary in Koh Kong Province, Cambodia. It is flowing past the provincial capital of Khemarak Phoumin, and empties in the Gulf of Thailand.[2]