The Peña Montañesa (Aragonese: Penya Montanyesa) is an emblematic and very conspicuous rocky mountainous outcrop of the Pre-Pyrenees. It is located east of the valley of river Cinca, in the Sobrarbecomarca, Aragon, Spain. The ridge's highest summit is 2295 m high. Laspuña village is located at the feet of this massive mountain.
The summits of this long rocky mountain offer an excellent lookout point for a view of some of the main peaks of the Pyrenees from the south. The Peña Montañesa was one of the strongholds of Spanish Republican resistance against invading troops supporting General Franco during the Bolsa de Bielsa episode.