Coos

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

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