Sibi (Urdu: سِبی, Pashtu: سیوئ), is a city in the Balochistan province of Pakistan and the Sibi Division is named after it. The etymological origin of Sibi is attributed to Rani Sewi of the Sewa Dynasty that ruled Balochistan before the onset of Islam.
The Sibi division was carved out of the Quetta and Kalat divisions in April 1974, and comprises districts of Sibi, Kachchi, Nasirabad, Kohlu and Dera Bugti. The division derives its name from the town of Sibi or Sewai. The local tradition attributes the origin of this name to Rani Sewi, a Hindu lady of the Sewa dynasty which ruled this part of the country in ancient times.