- Marlon Brando
- Don Vito Corleone
- Al Pacino
- Michael Corleone
- James Caan
- Santino "Sonny" Corleone
- Richard S. Castellano
- Pete Clemenza
- Robert Duvall
- Tom Hagen
- Sterling Hayden
- Police Captain McCluskey
- John Marley
- Jack Woltz
- Richard Conte
- Don Emilio Barzini
- Diane Keaton
- Kay Adams Corleone
- Al Lettieri
- Sollozzo "The Turk"
- Abe Vigoda
- Sal Tessio
- Talia Shire
- Constanzia "Connie" Corleone Rizzi
- Gianni Russo
- Carlo Rizzi
- John Cazale
- Federico "Fredo" Corleone
- Rudy Bond
- Ottilio Cuneo
- Al Martino
- Johnny Fontane
- Morgana King
- Carmela Corleone
- Lenny Montana
- Luca Brasi
- John Martino
- Paulie Gatto
- Richard Bright
- Al Neri
- Alex Rocco
- Moe Greene
- Vito Scotti
- Nazorine
- Tere Livrano
- Theresa Hagen
- Victor Rendina
- Philip Tattaglia
- Jeannie Linero
- Lucy Mancini
- Julie Gregg
- Sandra Corleone
- Ardell Sheridan
- Mrs. Clemenza
- Simonetta Stefanelli
- Apollonia Vitelli-Corleone
- Angelo Infanti
- Fabrizio
- Corrado Gaipa
- Don Tommasino
- Francis Ford Coppola
- Director
- Mario Puzo
- Writer
- Gray Frederickson
- Associate Producer
- Albert S. Ruddy
- Producer
- Nino Rota
- Original Music
- Gordon Willis
- Cinematographer
- Marc Laub
- Film Editing
- Barbara Marks
- Film Editing
- William Reynolds
- Film Editing
- Murray Solomon
- Film Editing
- Peter Zinner
- Film Editing
- Dean Tavoularis
- Production Design
- Warren Clymer
- Art Director
- Philip Smith
- Set Decoration
- Anna Hill Johnstone
- Costume Design
- Philip Leto
- Hair Stylist
- Phil Rhodes
- Makeup Artist
- Dick Smith
- Makeup Artist
- Louis DiGiaimo
- Casting
- Andrea Eastman
- Casting
- Fred Roos
- Casting
