The Gross Windgällen is a 3,187 m high mountain in the Glarus Alps, overlooking the valley of the Reuss in the canton of Uri.

The name Gross Windgällen derives from Gälle or gellen, meaning as much as wailing, shrilling or whistling.

The Windgällen hut, owned by the Academic Alpine Club of Zurich is located higher at 2,032 m. From there starts the normal route to the top, via the Stäfelfirn.

The first climbing was made in 1848 by a mountain guide from Uri, Josef Maria Tresch-Exer together with Melchior Tresch.

This enabled Tresch-Exer for a subsequent climb to the summit together with Georg Hoffmann which took place ten days later.