Santiam River

General data
- Water type: River
- Source: South Santiam River, North Santiam River
- Progression: Willamette River -> Columbia River -> Columbia River Estuary -> Pacific Ocean -> Planet Earth
- Climates: Subtropical
- Continents: North America
- Countries: United States of America
Description
The Santiam River is a tributary of the Willamette River, about 12 miles (19 km) long, in western Oregon in the United States. Through its two principal tributaries, the North Santiam and the South Santiam rivers, it drains a large area of the Cascade Range at the eastern side of the Willamette Valley east of Salem and Corvallis.