The Big Bankroll is a 1961 American crime film directed by Joseph M. Newman, produced by Samuel Bischoff and starring David Janssen, Dianne Foster, Diana Dors and Jack Carson. During the prohibition era the gangster Arnold Rothstein rises to be a major figure in the criminal underworld. It is also known by the alternative title King of the Roaring 20's: The Story of Arnold Rothstein. It was based on a book by Leo Katcher.