- Source: Siris, Sardinia
Siris is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about 60 kilometres (37 mi) northwest of Cagliari and about 25 kilometres (16 mi) southeast of Oristano. As of 31 December 2004, it had a population of 235 and an area of 6.0 square kilometres (2.3 sq mi).
Siris borders the following municipalities: Masullas, Morgongiori, Pompu. Alongside Ala, Ateleta, Onano and Orero, it is one of five Italian municipalities with a palindromic name.