Duwamish River
General data
- Name: Duwamish River
- Water system: Salish Sea
- Water type: River
- Progression: Elliott Bay -> Puget Sound -> Salish Sea -> Pacific Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
The Duwamish River is the name of the lower 12 miles (19 km) of Washington state's Green River.
Its industrialized estuary is known as the Duwamish Waterway.
Although heavily polluted, it is an important habitat for the wildlife. Important to the Duwamish people, the Duwamish Longhouse and Cultural Center is on the west bank of the river and several parks have indigenous Lushootseed names .