Bumthang River (also known as Murchangphy Chhu) is a river in Bhutan. It joins the Tongsa Chhu or Mangde Chhu in southern Bhutan and the combined stream flows into the Manas River.
Coordinates: 27°01′07″N 90°50′25″E / 27.0187°N 90.8404°E / 27.0187; 90.8404