The La Ngà River (Vietnamese: Sông La Ngà) is a river of southern Vietnam. It originates in Lam Dong Province and flows through Binh Thuan Province and Dong Nai Province for 272 kilometres. The river has a basin area of 4710 km².[1] It is a major tributary of Dong Nai River, which it joins at Tri An Lake, and therefore part of one of the largest river systems in Vietnam.[2] One of its tributaries in Binh Thuan Province supports a hydro-power plant (Ham Thuan Dam).[3]