The Big Fix is a 1978 American political comedy thriller film directed by Jeremy Kagan and based on the novel by Roger L. Simon, who dramatized his own novel for the screen. It stars Richard Dreyfuss as private detective Moses Wine and co-stars Susan Anspach, Bonnie Bedelia, John Lithgow, and F. Murray Abraham.

Roger Lichtenberg Simon is an American novelist and screenwriter. He was formerly CEO of PJ Media and is now its CEO Emeritus. He is the author of eleven novels, including the Moses Wine detective series, seven produced screenplays and two non-fiction books. He has served as president of the West Coast branch of PEN, and as a member of the Board of Directors of the Writers Guild of America; he was also on the faculty of the American Film Institute and the Sundance Institute.