Biescas is a municipality in northeastern Spain, located close to the border with France in the midst of the Pyrenees. It lies in the province of Huesca, within the Aragon region.
The town's name is thought to derive from the term bizka, meaning "hill" in a Proto-Indo-European language.
Its position in the Pyrenees, near the French frontier, is the defining feature of its geography within the province of Huesca.