Antler Peak is a summit located in Mount Rainier National Park in Pierce County of Washington state. It is part of the Sourdough Mountains, a subset of the Cascade Range. Antler Peak is situated west of Dege Peak and northeast of Sunrise Historic District, with the Sourdough Ridge Trail traversing the south slope of Antler between the two. Mount Fremont is its nearest higher peak, to the west. Precipitation runoff from Antler Peak drains into the White River.