a town and district of Baluchistan. The town is now an important junction on the Sind-Peshin railway, where the Harnai line and the Quetta loop line meet, near the entrance of the Bolan pass, 88 m. S.E. of Quetta. Pop. (1901) 4551. The district, which was constituted in 1903, has an area of 4152 sq. m.; pop. (1901) 74,555. The greater part became British territory by the treaty of Gandamak in 1879; the rest is administered under a perpetual lease from the khan of Kalat. Political control is also exercised over the Marri-Bugti country, with an additional area of 7129 sq. m.: pop. (1901) 38,919. Besides the town of Sibi, the district contains the sanatorium of Ziarat, the summer residence of the government.
See Sibi District Gazetteer (Bombay, 1907).