西利戈（意大利语：Siligo），是意大利萨萨里省的一个市镇。总面积43.61平方公里，人口951人，人口密度21.8人/平方公里（2009年）。ISTAT代码为090068。

Siligo is a comune (municipality) in the region of Logudoro - Meilogu in the Province of Sassari in the Italian region Sardinia, located about 160 kilometres (99 mi) north of Cagliari and about 25 kilometres (16 mi) southeast of Sassari.

Siligo borders the following municipalities: Ardara, Banari, Bessude, Bonnanaro, Codrongianos, Florinas, Mores, Ploaghe.