Hohenwerfen Castle () is a medieval rock castle, situated on a precipice overlooking the Austrian market town of Werfen in the Salzach valley, approximately south of Salzburg. The fortress is surrounded by the Berchtesgaden Alps and the adjacent Tennen Mountains. Hohenwerfen is a sister of Hohensalzburg Fortress, both built by the Archbishops of Salzburg in the 11th century.