The German Workers' Party (Deutsche Arbeiterpartei, DAP) in Austria-Hungary was the predecessor of the Austrian and Czechoslovak Deutsche Nationalsozialistische Arbeiterpartei (DNSAP), founded on 14 November 1903, in Aussig (Ústí nad Labem), Bohemia.

Its party program was founded on Pan-Germanism, and was vehemently anti-Slavic, anti-Catholic, anti-Marxist and anti-capitalist.

In the elections for the Imperial Council in 1905 and 1911, the party obtained 3 seats.

At the end of the First World War, Walter Riehl would take over as leader of Austrian part of the party, which would be renamed the Deutsche Nationalsozialistische Arbeiterpartei (DNSAP).

Concurrently, Hans Knirsch would take up the leadership of the Czechoslovak DNSAP, a forerunner of the Sudeten German National Socialist Party.