The Chũ also called Minh Đức River is a river of Lạng Sơn Province in northeastern Vietnam. The 175 kilometre long river originates from Dinh Lap mountain.
"Chui River" and "Chuy River" redirect here. For the river of Anhui see Chu River (Anhui). For the South American Chuí or Chuy River, on the Brazil-Uruguay border and Brazil's southernmost point, see Chuí Stream. For the Nam Sam River or Chu River, on the Lao-Vietnam border, see Nam Sam River.