Judith Perelman Rossner (March 31, 1935 – August 9, 2005) was an American novelist, best known for her 1975 novel Looking for Mr. Goodbar. It was inspired by the murder of Roseann Quinn and examined the underside of the 1970s sexual liberation movement. This was her bestselling work, and it was adapted as a film of the same name, starring Diane Keaton. Rossner published other novels, set in both contemporary and historical times. Her most successful post-Goodbar novel was 1983's August, about the relationship between a troubled young woman in New York and her psychoanalyst with emotional troubles of her own.