The Mountain Lakes Wilderness is a wilderness area located in the Fremont–Winema National Forest in the southern Cascade Range of Oregon in the United States. It surrounds a cluster of four overlapping shield volcanoes, the highest of which is 8,208-foot (2,502 m) Aspen Butte. Over 20 small lakes lie along the bottoms of several large cirques carved by Ice Age glaciers near the summits of the volcanoes.