Bierge (Aragonese: Biarche) 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:
Coordinates: 42°10′N 0°05′W / 42.167°N 0.083°W / 42.167; -0.083