Mount Saint Nicholas is a peak in the remote southwestern section of Glacier National Park, in Montana.

It is a particularly steep, pointed rock pinnacle, and its distinctive profile is visible from many summits in the southern half of the park.

Because even its easiest ascent route is technical, with poor rock quality, it is "considered the most dangerous and difficult mountain for climbers in Glacier National Park.

"[3]: 335 Mount Saint Nicholas excels in terms of steep vertical relief, even by the high standards prevalent in Glacier National Park.

[3]: 337 Like other mountains in Glacier National Park, the peak is composed of sedimentary rock laid down during the Precambrian to Jurassic periods.