| Santa Teresa di Gallura | |
| Official Name: | Comune di Santa Teresa Gallura |
| Native Name: | Lungoni |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 41.25°N 20°W |
| Province: | Sassari (SS) |
| Mayor: | Stefano Ilario Pisciottu |
| Area Total Km2: | 101.19 |
| Population Footnotes: | [1] |
| Population Total: | 5211 |
| Population As Of: | 30 November 2014 |
| Population Demonym: | Lungunesi |
| Elevation M: | 40 |
| Saint: | Santa Teresa |
| Postal Code: | 07028 |
| Area Code: | 0789 |
Santa Teresa Gallura (Gallurese: Lungoni, Sardinian: Lungone) is a town on the northern tip of Sardinia, on the Strait of Bonifacio, in the province of Sassari, Italy. The southern coast of French island Corsica can be seen from the beach. The city is one of several possible locations for the ancient city of Tibula.
It has a permanent population of about 5,000, increasing to 10,000 to 15,000 with summer tourism. The main town square has various tourist shops and restaurants; many of these close in the off-season. Immediately to the north of the town is Rena Bianca, Santa Teresa's beach.