Tarsus or Tarsos (Ancient Greek: Ταρσός) was a town in ancient Bithynia, on the inland road east of Nicomedia. It is mentioned by Stephanus of Byzantium.

Its site is located near Tarsiye in Asiatic Turkey.

 This article incorporates text from a publication now in the public domain: Smith, William, ed. (1854–1857). "Tarsus". Dictionary of Greek and Roman Geography. London: John Murray.

40°44′45″N 30°28′46″E / 40.745838°N 30.479425°E / 40.745838; 30.479425