The Bolsterlanger Horn is a grass mountain in the Allgäu Alps in Bavaria.

Because its 1,586-metre-high summit rises above Bolsterlang, it is the local mountain (Hausberg) of this village.

The Bolsterlanger Horn is part of the Hörner Group and its southernmost peak.

In 2009 the path to the summit from the Hörnerbahn was made into a "reflection" walk.

At the top is a summit cross with mirrors which light up in the sunshine.