San Basilio () is a commune in the Metropolitan City of Cagliari, region of Sardinia, Italy, about north of Cagliari. As of 31 December 2004, it has a population of 1,371 and an area of .
San Basilio borders the municipalities of San Nicolò Gerrei, Sant'Andrea Frius, Senorbì, Silius, and Siurgus Donigala.