USFS Scoter was an American fishery patrol vessel that operated in the waters of the Territory of Alaska. She was part of the United States Bureau of Fisheries (BOF) fleet from 1922 to 1940. She then served as US FWS Scoter in the fleet of the Fish and Wildlife Service from 1940 to 1950. Before her United States Government service, she was the commercial purse seiner Clatsop. She returned to that name and to private ownership after the conclusion of her U.S. Government career.