Dorothea Carothers "Dede" Allen (December 3, 1923 – April 17, 2010) was an American film editor.
Allen is known for having edited classic films such as The Hustler (1961), Bonnie and Clyde (1967), Dog Day Afternoon (1975), and Reds (1981). She had an extended collaboration with director Arthur Penn, and over the years had worked with other distinguished directors including Sidney Lumet, Robert Wise, Elia Kazan, and George Roy Hill. She received three Academy Award nominations for her work on Dog Day Afternoon, Reds, and Wonder Boys (2001).