| Tratalias | |
| Official Name: | Comune di Tratalias |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 39.1°N 43°W |
| Region: | Sardinia |
| Province: | South Sardinia |
| Mayor: | Emanuele Pes |
| Area Total Km2: | 31.0 |
| Population Total: | 1081 |
| Population As Of: | 30 November 2015[1] |
| Elevation M: | 17 |
| Postal Code: | 09010 |
| Area Code: | 0781 |
Tratalias is a comune (municipality) in the Province of South Sardinia in the Island of Sardinia, located about 50km (30miles) southwest of Cagliari and about 8km (05miles) southeast of Carbonia.
Tratalias borders the following municipalities: Carbonia, Giba, Perdaxius, Piscinas, San Giovanni Suergiu, Villaperuccio. The former cathedral of Santa Maria di Monserrato is an example of Sardinian Romanesque architecture. Built in 1213–82, it has a façade with two rows of Lombard bands and a rose window. The interior has a rectangular plan with a nave and two aisles, and a semicircular apse.