Banghiang River (Se Banghiang, Sê Băng Hiêng in Vietnamese) is a river in Savannakhet Province of Laos and a tributary the Mekong River. It originates on the west side of the Annamite Range and joins the Mekong near Savannakhet city.

16°19′5.3″N 105°58′35.3″E / 16.318139°N 105.976472°E / 16.318139; 105.976472