| Viddalba | |
| Official Name: | Comune di Viddalba |
| Native Name: | Vidda 'ecchja |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 40.9167°N 62°W |
| Region: | Sardinia |
| Province: | Sassari (SS) |
| Mayor: | Federico Soggia |
| Area Total Km2: | 48.8 |
| Population Footnotes: | [1] |
| Population Total: | 1724 |
| Population As Of: | 30 November 2014 |
| Population Demonym: | Viddalbesi |
| Elevation M: | 22 |
| Postal Code: | 07030 |
| Area Code: | 079 |
Viddalba (Gallurese: Vidda 'ecchja, Sardinian: Viddalba) is a comune (municipality) in the Province of Sassari in the Italian region Sardinia, located about 190km (120miles) north of Cagliari and about 35km (22miles) northeast of Sassari.
Viddalba borders the following municipalities: Aggius, Badesi, Bortigiadas, Santa Maria Coghinas, Trinità d'Agultu e Vignola, Valledoria.
Sights include several domus de janas and nuraghe, a Roman necropolis and remains of a bridge, and the medieval Romanesque church of San Giovanni Evangelista.