Canfranc is a municipality in the Aragón Valley of north-eastern Spain, in the Aragon region. It consists of two villages: the original village and Canfranc Estación.
The second village developed with the establishment of Canfranc International railway station, which was built to serve railway traffic across the Pyrenees. The station's role in cross-border rail travel between Spain and France shaped the growth of the settlement around it.
Canfranc lies in the Pyrenees near the French border, and its position in the Aragón Valley has made it a point of passage through the mountains.