| Laerru | |
| Official Name: | Comune di Laerru |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 40.8167°N 58°W |
| Region: | Sardinia |
| Province: | Sassari (SS) |
| Mayor: | Pietro Moro |
| Area Total Km2: | 19.9 |
| Population Footnotes: | [1] |
| Population Total: | 902 |
| Population As Of: | 31 August 2017 |
| Population Demonym: | Laerresi |
| Elevation M: | 165 |
| Postal Code: | 07030 |
| Area Code: | 079 |
Laerru (Sardinian: Laìrru) is a comune (municipality) in the Province of Sassari in the Italian region Sardinia, located about 180km (110miles) north of Cagliari and about 25km (16miles) northeast of Sassari.
Laerru borders the following municipalities: Bulzi, Martis, Nulvi, Perfugas, Sedini.