Francis Ford Coppola Director Al Pacino Michael Corleone Actor Robert Duvall Tom Hagen Actor Diane Keaton Kay Corleone Actor Robert De Niro Vito Corleone Actor John Cazale Federico "Fredo" Corleone Actor Talia Shire Constanzia "Connie" Corleone Actor Lee Strasberg Hyman Roth Actor Michael V. Gazzo Frankie Pentangeli Actor G.D. Spradlin Senator Pat Geary Actor Richard Bright Al Neri Actor Gastone Moschin Fanucci Actor Tom Rosqui Rocco Lampone Actor Bruno Kirby Young Peter Clemenza Actor Frank Sivero Genco Actor Francesca De Sapio Young Carmela Corleone Actor Morgana King Carmela Corleone Actor Marianna Hill Deanna Corleone Actor Leopoldo Trieste Signor Roberto Actor Dominic Chianese Johnny Ola Actor Amerigo Tot Michael's Bodyguard Actor Troy Donahue Merle Johnson Actor John Aprea Young Sal Tessio Actor Abe Vigoda Sal Tessio Actor Tere Livrano Theresa Hagen Actor Gianni Russo Carlo Rizzi Actor Joe Spinell Willie Cicci Actor Maria Carta Vito's mother Actor Oreste Baldini Vito as a boy Actor Giuseppe Sillato Don Francesco Actor Mario Cotone Don Tommasino Actor Mario Puzo Writer Gray Frederickson Co-Producer Fred Roos Co-Producer Mona Skager Associate Producer Carmine Coppola Original Music C. Curet Alonso Original Songs Nino Rota Original Music Gordon Willis Cinematographer Barry Malkin Film Editing Richard Marks Film Editing Peter Zinner Film Editing Dean Tavoularis Production Design Angelo P. Graham Art Director George R. Nelson Set Decoration Theadora Van Runkle Costume Design Michael S. Glick Production Manager Newt Arnold Assistant Director Jane Feinberg Casting Vic Ramos Casting Mike Fenton Casting