Parnassus or Parnassos (Ancient Greek: Παρνασσός) was a town in the northern part of ancient Cappadocia, on the right bank of the Halys River, and on or near a hill, to which it owed its name, on the road between Ancyra and Archelais, about 63 miles west of the latter town. It became a bishopric and remains a Roman Catholic titular see.