The Rio Grande de Mindanao, as Mindanao River or on its upper reaches as Pulangi River called, is the largest river in the southern Philippine island of Mindanao, and the second greatest of the entire island nation.
The main source is located in the 2093-meter high mountain Tago, north of Malaybalay City, southwest of Butuan City in the highlands of Bukidnon. Here he is called Pulangi River and flows southward into the province Cotabato. Its main tributaries are the Buluan, of Allah and in the mountains of Kalatungan springing Muleta.