Dishonored Lady is a 1947 film noir crime film directed by Robert Stevenson and starring Hedy Lamarr, Dennis O’Keefe, and John Loder. It is based on the 1930 play Dishonored Lady by Edward Sheldon and Margaret Ayer Barnes. The film is also known as Sins of Madeleine. Hedy Lamarr and John Loder were married when they made this film, they divorced before the year was out.

It is the story of a beautiful art department editor at a high-profile Manhattan fashion magazine who becomes a lively party girl at night. With the pressures of her work and her disappointing love life driving her to a breakdown, she seeks out the help of a psychiatrist, who recommends that she leave her job and her lifestyle behind and move into a smaller apartment under another name. Following his advice, she takes an interest in painting and meets a handsome neighbor.