Duwamish may refer to:

People Duwamish people, a Lushootseed-speaking Indigenous people in Washington state Duwamish Tribe, an unrecognized tribe of Duwamish descendants

Places Duwamish Head, a promontory jutting into Elliott Bay Duwamish River, in Washington state

Other Duwamish (fireboat)

See also Elliott Bay, often called "Duwamish Bay" in the 19th century Duwamish Head, a feature on Seattle's Elliott Bay