Coos Bay is a bay on the coast of Oregon in the United States.
Coos Bay may also refer to: Coos Bay, Oregon, a city in Oregon Port of Coos Bay Coos Bay Rail Link , a United States Navy seaplane tender in commission from 1943 to 1946 , later WHEC-376, a United States Coast Guard cutter in commission from 1949 to 1966
See also Coos (disambiguation)