Austria–Yugoslavia relations (German: Österreichisch-Jugoslawien-Beziehungen; Serbo-Croatian: Austrijsko-jugoslavenski odnosi, Аустријско-југословенски односи; Slovene: Avstrijsko-jugoslovanski odnosi; Macedonian: Односите Австрија-Југославија) were historical foreign relations between Austria and now broken up Yugoslavia.

During the interwar period of European history relations between the First Austrian Republic and the Kingdom of Yugoslavia were marked by the Austro-Slovene conflict in Carinthia, 1920 Carinthian plebiscite, 1920 establishment of pro-status quo Little Entente, 1934 Rome Protocols between revanchist Austria, Hungary and Fascist Italy and 1938 Anschluss.

From the Anschluss to the end of World War II in 1945, Austria was under National Socialism and part of Nazi Germany.

[1] Austria, as a neutral country, and post 1948 Tito–Stalin split Yugoslavia as a non-aligned country, collaborated closely on building bridges in the Cold War Europe, particularly within the framework of the Conference on Security and Co-operation in Europe (modern day OSCE).

In 1989, together with Hungary and Italy, Austria and Yugoslavia were the founding members of the Central European Initiative.