Italy–Yugoslavia relations are the cultural and political relations between Italy and Yugoslavia in the 20th century, since the creation of Yugoslavia in 1918 until its dissolution in 1992. Relations during the interwar years were hostile because of Italian irredentist demands to Yugoslav territory, leading to Fascist Italy and the Axis Powers invading Yugoslavia during World War II. After lingering tensions after the war over the status of the Free Territory of Trieste, relations improved during the Cold War.