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