Moggio Udinese (Friulian: Mueç, German: Mosach or Mosnitz, Slovene: Možac or Možnicia) is a comune (municipality) in the Province of Udine in the Italian region Friuli-Venezia Giulia. It is situated in the Friuli region, in the valley of the Fella River, a right tributary of the Tagliamento. Moggio is located about 100 kilometres (62 mi) northwest of Trieste and about 40 kilometres (25 mi) north of Udine. In the north, the mountains of the Carnic Alps stretch up to the border with Austria; beyond the Fella are the Julian Alps with the Resia Valley in the southeast. As of 31 December 2004, the municipality had a population of 1,991 and an area of 143.5 square kilometres (55.4 sq mi). It can be reached via the Autostrada A23.