Aspen Butte, Shield volcano in Cascade Range, Oregon, United States.

Aspen Butte is a steep-sided shield volcano in the Cascade Range of southern Oregon, reaching 2,504 meters. Ice Age glaciers carved three large cirques into its north and northeast flanks, removing most of the original summit; the high point now lies on the curving ridge bounding the cirques' southern edge above steep cliffs.

Aspen Butte is the highest of four overlapping shield volcanoes in the Mountain Lakes Wilderness, alongside Mount Harriman, Crater Mountain and Greylock Mountain. During the Ice Age, glaciers carved three large cirques into its north and northeast flanks, removing most of the original summit area, including any trace of a crater. The summit is now the high point of the curving ridge bounding the southern edge of the cirques above steep cliffs.

The Mountain Lakes region around this volcano gained protection as a primitive area in 1930, then became an official wilderness zone through the 1964 Wilderness Act. This designation shapes how visitors experience and move through the landscape today.

The Clover Creek Trail reaches the summit via a route that is roughly 17 kilometers long with approximately 800 meters of elevation gain from the trailhead. The hike requires good fitness, but the mountain provides natural stopping points along the way.

Little Aspen Butte, a 2,205-metre satellite cone on the southern flanks, is cut off from the main volcano by a pass at 1,998 metres. Mount Carmine, 2,402 metres and just over 1.6 km north, is not a separate volcano but the highest remnant of Aspen Butte's north flank, split from it by two glacial cirques.