The Hochseiler (also "Hochsailer") is a mountain,  m (AA), in the Hochkönig massif within the Berchtesgaden Alps. It lies on the boundary between the districts of Zell am See and St. Johann im Pongau in the Austrian state of Salzburg.
The summit can be gained from the north along the "Mooshammersteig" path or from the Teufelslöcher over the Übergossene Alm along the southeastern arête (climbing grade I–II).