Cong River (sông Công) is a river in Central Vietnam The Kong River, also known as the Xe Kong or the Se Kong (Lao: ເຊກອງ Se Kong, (Khmer:សេកុង(official) or ស្រែគង្គ(Khmerization)), Vietnamese: sông Sê Kông) is a river in Southeast Asia. The river originates in Thừa Thiên–Huế Province in Central Vietnam and flows through southern Laos and eastern Cambodia. It joins the Mekong River near Stung Treng town of Cambodia. Part of its course forms the international boundary between Laos and Cambodia. Tributaries Xe Kaman River Rivers of Thừa Thiên Huế province Rivers of Laos Rivers of Cambodia International rivers of Asia Cambodia–Laos border Tributaries of the Mekong River Border rivers Rivers of Vietnam