The Clackamas Indians are a tribe of Native Americans of the U.S. state of Oregon who traditionally lived along the Clackamas River in the Willamette Valley. Lewis and Clark estimated their population at 1800 in 1806. At the time the tribe lived in 11 villages and subsisted on fish and roots.
Descendants of the Clackamas belong to the Confederated Tribes of the Grand Ronde Community of Oregon.
Other Chinookans of the lower Columbia River:
- Snyder, Eugene E.. Portland Names and Neighborhoods: Their Historic Origin. Portland: Binford & Mort, 1979. p.110.
- "Willamette Meteorite Agreement".