SAN LUSSURGUI, a town of the Island of Sardinia, in the division of Sassari, in a valley inclosed by mountains, 8 miles W.S.W. of Cagliari. Its narrow winding streets are lined with good houses; and there are several churches, a convent, and a school. Woollen and linen cloth are manufactured; and there is some trade in cattle, wool, &c. Pop. 4460.