An American fiction writer, she is best known for Looking for Mr. Goodbar, a 1975 novel inspired by the murder of teacher Roseann Quinn. She is also famous for August, a 1983 work that focuses on the relationship between a young woman and her psychologist.
After dropping out of the City College of New York, she did secretarial work for a real estate business.
After the publication of Looking for Mr. Goodbar, Rossner was able to quit her day job and focus on writing.
She grew up in New York City as the daughter of a textile worker and a schoolteacher. She married Robert Rossner; they had two children.
Looking for Mr. Goodbar was made into a film starring Diane Keaton.