Bierge (; ) is a municipality located in the province of Huesca, Aragon, Spain. According to the 2010 census (INE), the municipality has a population of 258 inhabitants.
Bierge is at 600 meters on the sea, and it has the following villages:
In the mountain, near Nasarre and OtÃÂn, is the Dolmen Losa de la Mora.
Crucial scenes of the film The Invisible Guest take place in Bierge.