| San Nicolò Gerrei | |
| Official Name: | Comune di San Nicolò Gerrei |
| Native Name: | Pauli Gerrei |
| Pushpin Map: | Italy Sardinia |
| Coordinates: | 39.5°N 27°W |
| Region: | Sardinia |
| Mayor: | Marcello Mura |
| Area Total Km2: | 62.6 |
| Population Total: | 881 |
| Population As Of: | 30 November 2010[1] |
| Elevation M: | 365 |
| Postal Code: | 09040 |
| Area Code: | 070 |
San Nicolò Gerrei, Pauli Gerrei in sardinian language, is a comune (municipality) in the Province of South Sardinia in the Italian region Sardinia, located about 35km (22miles) northeast of Cagliari, in the Gerrei traditional subregion.
San Nicolò Gerrei borders the following municipalities: Armungia, Ballao, Dolianova, San Basilio, Sant'Andrea Frius, Silius, Villasalto.