Clements Mountain, Mountain summit in Glacier National Park, Montana, United States.

Clements Mountain is a 8,765-foot (2,672 m) peak in the Lewis Range of Glacier National Park, Montana, rising west of Logan Pass above the Hidden Lake Trail. It is built of Precambrian to Jurassic sedimentary rock, pushed over younger Cretaceous strata by the Lewis Overthrust fault.

Clements Mountain is named after Walter M. Clements, who worked to set up a treaty between the Blackfeet and the U.S. Government for the purchase of tribal lands east of the continental divide, land that later became part of Glacier National Park. The sources record no first ascent or climbing date for the peak.

The peak is named for Walter M. Clements, who worked to set up a treaty between the Blackfeet and the U.S. Government for the purchase of tribal lands east of the continental divide, land that later became part of Glacier National Park. The name is the main cultural trace of that negotiation left on the landscape.

Clements Mountain stands west of Logan Pass, above the Hidden Lake Trail that leads to Hidden Lake just west of the Continental Divide. The peak lies in an alpine subarctic climate zone with long, cold, snowy winters and cool to warm summers; wind chill can push temperatures below −30 °F.

Clements Mountain is built from Precambrian to Jurassic sedimentary rock laid down in shallow seas, then pushed over younger Cretaceous rock by the Lewis Overthrust, a slab about 3 mi (4.8 km) thick, 50 mi (80 km) wide and 160 mi (260 km) long. The fault began moving about 170 million years ago.