The Pulangi River ;, also spelled Pulangui, is one of the major tributaries of the Rio Grande de Mindanao, an extensive river system in Mindanao, Philippines. With a length of 320 kilometres (199 mi), it is the longest river in Bukidnon and the 5th longest river in the Philippines. It traverses through majority of the cities and municipalities of Bukidnon from its source in Barangay Kalabugao, Impasugong, Bukidnon.