Tavagnacco is a comune in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about 70 kilometres northwest of Trieste and about 8 kilometres north of Udine. The municipal seat is in the frazione of Feletto Umberto. Tavagnacco borders the following municipalities: Martignacco, Pagnacco, Pasian di Prato, Reana del Rojale, Tricesimo and Udine.