Ozieri (locally Othieri in Sardinian) is a town of approx. 11,000 inh. (province of Sassari) in northern Sardinia (Italy), in the Logudoro sub-region.

Important railway station (lines for Olbia, Porto Torres and Cagliari).

National road to Sassari (SS597-E840) and Olbia (SS199-E840). Food industry. High Schools, Episcopal centre (Diocese of Ozieri).