Bằng Lũng is a township and capital town of Chợ Đồn District, Bắc Kạn Province, in Vietnam. the town located:Ngoc Phai commune, Phuong Vien commune to the north Phuong Vien commune, Dai Sao commune to the East Dai Sao commune, Bang Lang commune to the South Bang Lang commune, Yen Thuong commune, Ngoc Phai commune to the West