The Mantaro River (Spanish: Río Mantaro, Quechua: Hatunmayu) is a long river running through the central region of Peru. Its Quechua name means "great river". The word "Mantaro" may be a word originally from the Asháninka language, who live downstream along the Ene River. The Mantaro, along with the Apurímac River, are the sources of the Amazon River, depending on the criteria used for definition.
