Porpetto () is a (municipality) in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about northwest of Trieste and about south of Udine. As of 31 December 2004, it had a population of 2,717 and an area of .
The municipality of Porpetto contains the (boroughs) of Castello, Corgnolo, Foredana and Pampaluna. The river Corno crosses the city.
Porpetto borders the following municipalities: Castions di Strada, Gonars, San Giorgio di Nogaro, Torviscosa.