| Bonnanaro | |
| Official Name: | Comune di Bonnanaro |
| Native Name: | Bunnànnaru |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 40.5333°N 54°W |
| Region: | Sardinia |
| Province: | Sassari (SS) |
| Mayor: | Antonio Marras |
| Area Total Km2: | 21.8 |
| Population Footnotes: | [1] |
| Population Total: | 971 |
| Population As Of: | 30 April 2017 |
| Population Demonym: | Bonnanaresi |
| Elevation M: | 405 |
| Postal Code: | 07043 |
| Area Code: | 079 |
Bonnanaro (Sardinian: Bunnànnaru) is a comune (municipality) in the Province of Sassari in the Italian region Sardinia, located about 150km (90miles) north of Cagliari and about 30km (20miles) southeast of Sassari.
Bonnanaro borders the following municipalities: Bessude, Borutta, Mores, Siligo, Torralba.