Ittiri is a town and comune located in the Metropolitan City of Sassari within the autonomous island region of Sardinia, Italy. Situated in the traditional region of Logudoro, it lies approximately 15 kilometres (9 mi) south of Sassari and about 160 kilometres (99 mi) northwest of Cagliari.
The municipality has a population of 7,730 inhabitants. It serves as a local administrative center within the northern portion of the island.