Peggy Guggenheim (August 26, 1898 – December 23, 1979) was an American art collector, writer, and socialite. She was known for her extensive contemporary art collection, which spanned the range of Surrealism, Cubism, and abstract expressionism, and for her patronage of dozens of artists.

She was also a passionate supporter of writers and literature. Close literary friends included Djuna Barnes, Mary McCarthy, Antonia White, James Joyce, Samuel Beckett, and Emma Goldman, many of whom she supported financially. Her autobiography, Out of This Century, is an incisive and witty account of her life.