Seui (Sardinian and Italian: [seˈui]) is a comune (municipality) in the Province of South Sardinia in the Italian region Sardinia, located about 70 kilometres (43 mi) north of Cagliari and about 30 kilometres (19 mi) southwest of Tortolì. As of 31 December 2004, it had a population of 1,525 and an area of 148.3 square kilometres (57.3 sq mi).

Seui borders the following municipalities: Arzana, Escalaplano, Esterzili, Gairo, Perdasdefogu, Sadali, Seulo, Ulassai, Ussassai.

Demographic evolution