The Bakoy or Bakhoy River (also Semefé River) is a river in West Africa. It runs through Guinea and Mali and joins with the Bafing River to form the Sénégal River in Bafoulabé, in the Kayes Region of western Mali. It is also called the White River while the Bafing is called the Black River.[1][2] The Bakoy forms a part of the international boundary between Guinea and Mali.