Tonara is a comune (municipality) in the Province of Nuoro in the Italian region Sardinia, located about 90 km north of Cagliari and about 35 km southwest of Nuoro. As of 31 December 2004, it had a population of 2,116 and an area of 52.1 sqkm. The municipality of Tonara contains the frazioni (subdivisions, mainly villages, and hamlets) Arasulè, Su Pranu, Toneri, Teliseri, and Ilalà (abandoned). Tonara borders the following municipalities: Austis, Belvì, Desulo, Sorgono, and Tiana.

Demographic evolution