The La Ngà River (Vietnamese: Sông La Ngà) is a river of southern Vietnam. It originates in Lâm Đồng Province and flows through Bình Thuận Province and Đồng Nai Province for . The river has a catchment area of 4710km2.[1] It is a major tributary of the Đồng Nai River, which it joins at Trị An Lake, and therefore part of one of the largest river systems in Vietnam.[2] One of its tributaries in Bình Thuận Province supports a hydro-power plant: the Hàm Thuận – Đa Mi Hydroelectric Power Complex.[3]