Lone Peak, Mountain summit in Salt Lake County, United States.

Lone Peak is the 11,260-foot summit at the centre of the Lone Peak Wilderness in the Wasatch Range, southeast of Salt Lake City above Draper. It consists almost entirely of quartz monzonite of the 30.5-million-year-old Little Cottonwood Stock, and its high ridge runs from Little Cottonwood Canyon to Corner Canyon, with Ennis Peak and Big Horn Peak nearby.

The first recorded ascent of Lone Peak was made by Richard Bell Sr. of Riverton, Utah, who also led the first recorded climb of the Lone Peak Cirque and later taught alpine guides; Bells Canyon, still a common route to the summit, is named for him. The Lone Peak Wilderness was established in 1978. In 1936 a Western Air Express Boeing 247 crashed below Hardy Ridge, killing seven.

Lone Peak gives its name to the Lone Peak Wilderness, 12,000 hectares of the Wasatch Range protected in 1978, the first wilderness area designated in Utah. The Outlaw Cabin, built by the Allen brothers and Alan Summerhays between 1960 and 1967 from trees felled on the meadow, holds three cots, a potbelly stove and a visitors' journal. In October 1997 a Draper family sheltered there during a snowstorm until rescued.

The Jacob's Ladder Trail offers the most direct route to the summit but requires climbing experience and skill on steep sections. Visitors should prepare for changing weather conditions and bring sturdy footwear plus appropriate climbing equipment.

The 1968 film The Devil's Brigade was shot in Utah, and its assault on a Nazi fortress was filmed on the lower slopes of Lone Peak, presented in the film as Jordan. The Outlaw Cabin, built from trees felled on the spot between 1960 and 1967, holds a journal visitors can write in.