- Al Pacino
- Michael Corleone
- Robert Duvall
- Tom Hagen
- Diane Keaton
- Kay Corleone
- Robert De Niro
- Vito Corleone
- John Cazale
- Federico "Fredo" Corleone
- Talia Shire
- Constanzia "Connie" Corleone
- Lee Strasberg
- Hyman Roth
- Michael V. Gazzo
- Frankie Pentangeli
- G.D. Spradlin
- Senator Pat Geary
- Richard Bright
- Al Neri
- Gastone Moschin
- Fanucci
- Tom Rosqui
- Rocco Lampone
- Bruno Kirby
- Young Peter Clemenza
- Frank Sivero
- Genco
- Francesca De Sapio
- Young Carmela Corleone
- Morgana King
- Carmela Corleone
- Marianna Hill
- Deanna Corleone
- Leopoldo Trieste
- Signor Roberto
- Dominic Chianese
- Johnny Ola
- Amerigo Tot
- Michael's Bodyguard
- Troy Donahue
- Merle Johnson
- John Aprea
- Young Sal Tessio
- Abe Vigoda
- Sal Tessio
- Tere Livrano
- Theresa Hagen
- Gianni Russo
- Carlo Rizzi
- Joe Spinell
- Willie Cicci
- Maria Carta
- Vito's mother
- Oreste Baldini
- Vito as a boy
- Giuseppe Sillato
- Don Francesco
- Mario Cotone
- Don Tommasino
- Francis Ford Coppola
- Director, Producer, Writer
- 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
