Don Corleone: John Marley, Carlo Ponti, Marlon Brando, Laurence Olivier, Frank DeKova. Michael Corleone: Robert DeNiro, Ant. Genovese, Dustin Hoffman, Al Pacino. Scott Marlowe, Mike Margota, Richard Romanos, Jimmy Caan, Martin Sheen. Sonny Corleone: Tony Lo Bianco, Peter Falk, Al Lettiere, Jimmy Caan, Carmine Caridi, Scott Marlowe, Don Gordon Tony Zerbe, Lov Antonio, Robert Viharo, Rudy Solari, John Saxon, John Brascia, Johnny Sette, Adam Roake, Ben Gazzara, Harry Guardino. Tom Hagen: Ben Piazza, Robert Duvall, Tony Zerbe, Peter Donat