Crescent Spire, Mountain summit in Bugaboo Provincial Park, Canada.

Crescent Spire is a 2,640-metre granite peak in the Purcell Mountains of the Columbia Mountains, southeastern British Columbia. Its climbing routes range from the 5.4 West Ridge (180 m) to Left Dihedral and Westside Story at 5.11, with multi-pitch lines such as McTech Arete and Paddle Flake Direct.

Crescent Spire was named in 1933 by the American mountaineer James Monroe Thorington, who was struck by the peak's shape. The sources record no first ascent by Thorington or Conrad Kain; the documented climbing history is one of routes, such as the West Ridge at 5.4 over 180 metres and the Northeast Ridge at 5.6 over 300 metres.

James Monroe Thorington named the peak in 1933 for its crescent-like profile. The recorded routes carry names such as Roof McTech, Energy Crisis and Dunlop's Dangle, and their grades from 5.4 to 5.11+ show what climbers come for. The Northeast Ridge, 5.6 over 300 m, is the long moderate line.

Reaching the base camp involves a long drive on unpaved roads followed by a substantial hike through forested terrain. Visitors should prepare for rough access conditions and ensure they have adequate physical fitness for the approach.

Crescent Spire was named in 1933 by the American mountaineer James Monroe Thorington, who was taken by the peak's shape. Its route list mixes long ridge climbs with short test pieces: the West Ridge runs 5.4 over 180 m, the Northeast Ridge 5.6 over 300 m, while Roof McTech and Energy Crisis are each only two pitches.