Crystal Peak is a summit located in eastern Mount Rainier National Park, in Pierce County of Washington state. Crystal Peak is situated northwest of Chinook Peak, and nearly on the crest of the Cascade Range. Crystal Mountain and Crystal Lakes lie immediately to the northeast, and Three Way Peak is to the east. Access to the summit (which was a former fire lookout site) is via a hiking trail which branches off from the Crystal Lakes Trail. That trailhead starts along Highway 410, which traverses the western base of the mountain. Precipitation runoff from Crystal Peak drains into tributaries of the White River.