Premariacco is a comune in the Regional decentralization entity of Udine in the Italian region of Friuli-Venezia Giulia, located about 60 kilometres northwest of Trieste and about 13 kilometres east of Udine. Premariacco borders the following municipalities: Buttrio, Cividale del Friuli, Corno di Rosazzo, Manzano, Moimacco, Pradamano, Remanzacco.