Tinnura is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about 130 km (81 mi) northwest of Cagliari and about 40 km (25 mi) north of Oristano. As of 31 December 2004, it had a population of 268 and an area of 3.8 km2 (1 sq mi). Tinnura is very famous for its Murales.
Tinnura borders the following municipalities: Flussio, Sagama, Suni.