Spencer Butte, Forested hill in Eugene, United States.

Spencer Butte is a forested hill south of Eugene, Oregon, rising to exposed basalt rock at its summit. From the top, the view opens over surrounding forests and valleys, and on clear days the Cascade Mountains are visible in the distance.

The Kalapuya people lived in this region for centuries and knew this hill as part of their everyday landscape. In the 19th century, European settlement changed how the land was used, and the site eventually came under protection as a regional park.

The Kalapuya called the butte Champ-a te or Cham-o-tee, meaning rattlesnake. One account says it was named for a young Hudson's Bay Company Englishman named Spencer, said to have been killed by the Kalapuya after climbing the hill alone; another credits Secretary of War John C. Spencer, named in July 1845 by Elijah White. A third holds it honours Spencer Fullerton Baird, naturalist and first curator of the Smithsonian, uncle of Eugene Skinner. Sufjan Stevens mentions Spencer Butte twice in "All Of Me Wants All Of You".

The hill sits within Spencer Butte Park south of Eugene and can be reached from several trailheads. The climb is steep, especially near the top, so sturdy shoes and enough water are a good idea before you start.

A lone Douglas fir stood at the summit until February 2021, when a vandal cut it down; the top is now bare rock. The butte is volcanic in origin and may be a volcanic plug. The song "All of Me Wants All of You" by Sufjan Stevens names Spencer Butte twice.