Tonara is a comune (municipality) in the Province of Nuoro in the Italian region Sardinia, located about north of Cagliari and about southwest of Nuoro. As of 31 December 2004, it had a population of 2,116 and an area of .
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.