Mount Saint Nicholas, Mountain summit in Glacier National Park, Montana, United States

Mount Saint Nicholas is a mountain summit in Glacier National Park, Montana, featuring a distinct horn-shaped peak with steep vertical walls on multiple sides. The mountain rises to approximately 9,381 feet and presents several challenging climbing routes suitable for experienced mountaineers.

Reverend Conrad Wellen completed the first recorded ascent in 1926, which opened new possibilities for technical climbing in the area. This achievement helped establish the mountain as an important destination for mountaineering in Montana.

The peak's name comes from Saint Nicholas, though the sources do not record who chose it. Its pointed profile is a landmark visible from many summits in the southern half of Glacier National Park, so climbers and park visitors use it to orient themselves across the southwestern section of the park.

The standard route is the Northeast Ridge, starting from the east side of the peak with a scramble up a gully to a prominent notch; about a thousand vertical feet of technical climbing remain above it. The rock quality is poor, and the peak lies in an alpine subarctic climate with long, cold, snowy winters. Temperatures can drop below −10 °F, with wind chill factors below −30 °F.

The standard Northeast Ridge route starts with a scramble up a gully on the east side to a prominent notch, then continues with a thousand vertical feet (about 300 m) of technical climbing. The peak's northwest face drops one vertical mile (5,300 ft) over roughly 1.5 horizontal miles.