Tricesimo (Friulian: Tresesin) is a comune (municipality) in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about 70 kilometres (43 mi) northwest of Trieste and about 9 kilometres (6 mi) north of Udine.

As of 31 December 2004, it had a population of 7,471 and an area of 17.5 square kilometres (6.8 sq mi).

[3] The municipality of Tricesimo contains the frazioni (boroughs) Ara Grande, Ara Piccola, Felettano, Fraelacco, Leonacco, Braidamatta, Colgallo, and Adorgnano.

Tricesimo borders the following municipalities: Cassacco, Pagnacco, Reana del Rojale, Tarcento, Tavagnacco, Treppo Grande, Fagagna.

Tricesimo is twinned with: This article on a location in Friuli-Venezia Giulia is a stub.