Werfen (German pronunciation: [ˈvɛɐ̯fn̩]) is a market town in the district of St. Johann im Pongau, in the Austrian state of Salzburg.

Important trade routes passed through the Salzach valley since ancient times, when the area was part of the Roman Noricum province.

The settlement arose south of Hohenwerfen Castle, erected from 1075 at the behest of the Archbishop Gebhard of Salzburg during the Investiture Controversy with King Henry IV of Germany.

From 1675 onwards, numerous people in the environment of the local knacker Barbara Koller and her son Jakob were sentenced and executed in the Zaubererjackl witch trials.

The Krupp dynasty held the premises until the death of Arndt von Bohlen und Halbach in 1986, today the estates are privately owned by Frederick R. Koch.