John Henry O'Hara (January 31, 1905 ? April 11, 1970) was an American writer. He initially became known for his short stories and later became a best-selling novelist whose works include Appointment in Samarra and BUtterfield 8. He was particularly known for an uncannily accurate ear for dialogue. O'Hara was a keen observer of social status and class differences, and wrote frequently about the socially ambitious.

His Novel BUtterfield 8 was adapted into a movie in 1960. It was directed by Daniel Mann and starred Elizabeth Taylor and Laurence Harvey. Taylor, then 28 years old, won an Academy Award for her performance.

There is no entry about the novel available on Wikipedia at this time, but here is a link to the film entry.