The Ba Vì mountain range (tên nôm: Núi Ba Vì, tên chữ:Núi Tản Viên) is a soil-limestone mountain range in Vietnam. It covers an area of about 50 km2 in Ba Vì, Lương Sơn and Kỳ Sơn districts. The Ba Vì mountain range is called the lord of mountains (núi chúa) in the Vietnamese spirit though it is not the highest mountain range in Vietnam.