Coos may refer to:
People
- Cowasuck, also known as Cowass or Coös, an Algonquian-speaking Native American tribe in northeastern North America
- Coos people, an Indigenous people of the Northwest Plateau in Oregon
- Confederated Tribes of Coos, Lower Umpqua and Siuslaw Indians, federally recognized tribe of Coos people
Places
Inhabited places in the United States
- Coös County, New Hampshire
- Coos Bay, Oregon, a small city on Coos Bay
- Coos County, Oregon
Landforms
- Coos Bay, an inlet of the Pacific Ocean
- Coos River, southwest Oregon
Other uses
- Coosan languages, the language of the Pacific Coos people
See also
- Coosa (disambiguation)
- Kos, an island southwest of Asia Minor
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