Padru (Gallurese: Patru, ) is a comune (municipality) in the Province of Sassari in the Italian region Sardinia, located about 180 km north of Cagliari and about 15 km south of Olbia. As of 31 December 2004, it had a population of 2,107 and an area of 130.2 km2. The municipality of Padru contains the frazioni (subdivisions, mainly villages and hamlets) Sozza, Cuzzola, Sa Serra, Pedra Bianca, Biasì, Tirialzu, Ludurru, Sos Runcos, and Sas Enas. Padru borders the following municipalities: Alà dei Sardi, Loiri Porto San Paolo, Olbia, San Teodoro (OT), Torpè, Lodè, Bitti.