Winnie Lightner (September 17, 1899 – March 5, 1971) was an American stage and motion picture actress. Perhaps best known as the gold-digging Mabel in Gold Diggers of Broadway (1929), Lightner was often typecast as a wise-cracking gold-digger and was known for her talents as a comedian and singer. She is also noted for introducing the song "Singin' in the Bathtub" in the 1929 motion picture The Show of Shows.