Discovered by the Discovery expedition (1901–04) and named for William Waldegrave Palmer Selborne, Second Earl of Selborne, who entered the Cabinet as First Lord of the Admiralty in 1900.
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It was named at the suggestion of the US Advisory Committee on Antarctic Names, in association with Couzens Bay, which was named by the New Zealand Geological Survey Antarctic Expedition (1960–61) in honor of Lieutenant Thomas Couzens, Royal New Zealand Air Force, who lost his life in a crevasse accident near Cape Selborne on 19 November 1959.