Eleanor Mayo (1920–1981) was an American novelist, photographer, and public servant active in the mid twentieth century. She was raised in Southwest Harbor, Maine and spent most of her life on Mount Desert Island. She was the life companion of the well-known Maine novelist Ruth Moore. Mayo published five novels during her life and a posthumously issued short story collection. Mayo’s novel Turn Home was made into the 1950 film Tarnished. Mayo was active in local politics holding several elected positions in Tremont, Maine. She was elected the town’s first female selectman and later served many years as the town’s tax assessor.