39°52′24″N 8°26′23″E / 39.8733°N 8.43972°E
 View of Corinthian columns at Tharros | |
  Shown within Sardinia | |
| Type | Settlement |
|---|---|
| History | |
| Founded | Eighth century BCE |
| Cultures | Nuragic civilization, Punic civilization, Roman civilization |
| Site notes | |
| Condition | Ruined |
| Management | I Beni Culturali della Sardegna |
| Public access | Yes |
| Website | official website |
Tharros (also spelled Tharras, Archaic Greek: Θάρρας, Ptolemaic Hellenistic: Τάρραι/Τάρρας, Tárrai/Tárras; Latin: Tarrhae/Tarrhas) 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. It is located on the southern shore of the Sinis Peninsula, which forms the northern cape of the Bay of Oristano, by the cape of San Marco. Tharros, mentioned by Ptolemy and in the Itineraries, seems to have been one of the most important places on the island.