Ittiri (Sardinian: Itiri Cannedu) is a comune (municipality) in the Province of Sassari in the Italian region Sardinia, located about 160 kilometres (99 mi) northwest of Cagliari and about 15 kilometres (9 mi) south of Sassari.

The territory, made up of high plateaus mainly of trachytic and basaltic rocks, is rugged, hilly and crossed by valleys destined for cultivation; the most significant mountain ranges are: north-east on the line to Bessude Monte Torru (m 622), Mount Uppas (m 567) and towards Banari Mount Jana (552 m); south to Villanova mount Unturzu (m. 558), mountain Alas (m 517), point S'Elighe Entosu (m. 522) and mountain Lacusa (m 503).

- By decree of April 24, 2000, the President of the Republic granted Ittiri the institutional title of City.

In the dairy sector, Ittiri offers a large production of sheep cheese, most exported to United States of America.

In the construction industry, there are many craft businesses, and some deal with local stone processing the trachyte.