Tharros (also spelled Tharras, Archaic Greek: Θάρρας, Hellenistic Greek, Tarras or Tarrae, Τάρραι) was an ancient city and former bishopric on the west coast of Sardinia, Italy.It is currently a Latin Catholic titular see and an archaeological site near the village of San Giovanni di Sinis, municipality of Cabras, in the Province of Oristano.