- Kong River is also the Thai name for the Mekong River
- Cong River (sông Công) is a river in North East Vietnam
The Kong River (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 480 km 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.