Pyramid Peak, Mountain summit in Pitkin County, United States.

Pyramid Peak is a summit in the Elk Mountains of southeastern Pitkin County, Colorado, about 12 miles southwest of Aspen, reaching 14,018 ft (4,273 m). Its summit resembles a ragged square pyramid and is visible from the Roaring Fork River valley along the Maroon Creek canyon. The peak rises 4,000 ft above Crater Lake to the northwest in only 1.2 miles, and 4,400 ft above East Maroon Creek to the east over the same horizontal distance.

The first recorded ascent of Pyramid Peak was made in 1909 by Percy Hagerman and Harold Clark, who found routes up through terrain that had no established path at the time. The mountain quickly gained a reputation as one of the more demanding Colorado summits.

The peak's name comes from its summit, which resembles a ragged square pyramid when seen from the Roaring Fork River valley north of Aspen along the Maroon Creek canyon. It stands in the Maroon Bells-Snowmass Wilderness, within White River National Forest, land that draws hikers and climbers rather than casual sightseers.

The main starting point is the Maroon Lake Trailhead, which in summer is only accessible by shuttle from a nearby staging area due to heavy use. Starting early in the day is a good idea, as afternoon thunderstorms are common at altitude.

The standard routes, the northeast and northwest ridges, involve difficult route finding, high exposure and loose rock, making them two of the most dangerous standard routes on any Colorado fourteener. The summit rises 4,000 ft above Crater Lake in only 1.2 miles. Physicist Heinz Pagels, who summered at the Aspen Center for Physics 10 miles northeast, died in a climbing accident here in 1988.