Udine is a city and comune in northeastern Italy, in the middle of the Friuli-Venezia Giulia region, between the Adriatic Sea and the Carnic Alps…Udine is a city and comune in northeastern Italy, in the middle of the Friuli-Venezia Giulia region, between the Adriatic Sea and the Carnic Alps. It is the capital of the Regional decentralization entity of Udine. As of 2025, it has a population of 98,320 in the commune, and 176,000 with the urban area.