OZIERI, a town of the island of Sardinia, division of Sassari, in a valley surrounded by hills on all sides but the N., 15 miles E.S.E. of Sassari. It is substantially built on uneven ground; but the streets are narrow and irregular. Ozieri is the seat of the Bishop of Bisarcio, the town of that name having long since entirely fallen. It contains a cathedral, several other churches, a court-house, town-hall, prison, episcopal college, and several other schools. Woollen and linen stuffs are manufactured; and some trade is carried on in these, as well as in horses, cattle, hides, wool, &c. Pop. 8433.