Hornopirén (Spanish pronunciation: [ornoˈpiɾen]) is a stratovolcano located in the Andes, in Los Lagos Region of Chile, south of Yate Volcano and east of Apagado or Hualiaque pyroclastic cone. Hornopirén lies on the major regional Liquine-Ofqui Fault. The volcano is said to have erupted in 1835, although no details are known.