Sutrio (Friulian: Sudri) is a comune (municipality) in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about 120 kilometres (75 mi) northwest of Trieste and about 60 kilometres (37 mi) northwest of Udine. As of 31 December 2004, it had a population of 1,392 and an area of 21.1 square kilometres (8.1 sq mi).

The municipality of Sutrio contains the frazioni (boroughs) of Nojaris and Priola.

Sutrio borders the following municipalities: Arta Terme, Cercivento, Lauco, Ovaro, Paluzza, Ravascletto, Zuglio.

Demographic evolution