Austrofascism (German: Austrofaschismus) was the authoritarian rule installed in Austria with the May Constitution of 1934, which ceased with the annexation of the newly founded Federal State of Austria into Nazi Germany in 1938. It was based on a ruling party, the Fatherland Front (Vaterländische Front) and the Heimwehr (Home Guard) paramilitary militia. Leaders were Engelbert Dollfuss and, after Dollfuss's assassination, Kurt Schuschnigg, who were previously politicians of the Christian Social Party, which was quickly integrated into the new movement.
Austrofascism, which was Catholic, corporatist and espoused Austrian nationalism, must be contrasted with Austrian National Socialism, which was pan-German in outlook.
The Austrofascist movement's origin lies in the Korneuburg Oath, a declaration released by the Christian Social paramilitary organization Heimwehr on 18 May 1930. The declaration condemned both the "Marxist class struggle" and the economic structures of "liberal-capitalism". Furthermore, it explicitly rejected "the Western democratic parliamentary system and [multi]-party state".
The declaration was directed mainly at the Social Democratic opposition, largely in response to the Linz Program of 1926, and was not only taken by the Heimwehr but also by many Christian Social politicians, setting Austria on a course to an authoritarian system.