Forni Avoltri (Friulian: For Davôtri, Carnian dialect: For Davuatri) is a comune (municipality) in the Province of Udine in the Italian region Friuli-Venezia Giulia, located about 130km northwest of Trieste and about 70km northwest of Udine, on the border with Austria. As of 31 December 2004, it had a population of 704 and an area of 80.8km2. The municipality of Forni Avoltri contains the frazioni (subdivisions, mainly villages and hamlets) Piani di Luzza, Frassenetto, Sigilletto, Collinetta, and Collina. Forni Avoltri borders the following municipalities: Lesachtal (Austria), Paluzza, Prato Carnico, Rigolato, Santo Stefano di Cadore, Sappada.
