Al Pacino
Don Michael Corleone
Robert Duvall
Tom Hagen
Diane Keaton
Kay Corleone
Robert De Niro
Vito Corleone
John Cazale
Frederico 'Fredo' Corleone
Talia Shire
Constanzia 'Connie' Corleone
Lee Strasberg
Hyman Roth
Michael V. Gazzo
Frank Pentangeli
G. D. Spradlin
Senator Pat Geary
Richard Bright
Al Neri
Gastone Moschin
Don Fanucci
Bruno Kirby
Young Clemenza
Frank Sivero
Genco Abbandando
Francesca De Sapio
Young Mama Corleone
Morgana King
Mama 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 Tessio
Joe Spinell
William 'Willie' Cicci
Abe Vigoda
Salvatore 'Sal' Tessio
Gianni Russo
Carlo Rizzi
Maria Carta
Mrs. Andolini
Fay Spain
Mrs. Marcia Roth
Harry Dean Stanton
F.B.I. Man #1
David Baker
F.B.I. Man #2
Carmine Caridi
Carmine Rosato
Danny Aiello
Tony Rosato
William Bowers
Senate Committee Chairman
Carmen Argenziano
Michael's Buttonman #2
Kathleen Beller
Girl in 'Senza Mamma'
Peter Donat
Questadt
Roger Corman
Senator #2
Ivonne Coll
Yolanda
Erica Yohn
Governess
James Caan
Sonny Corleone (uncredited)
Roman Coppola
Sonny Corleone as a Boy (uncredited)
Sofia Coppola
Child on Ship (uncredited)
Julie Gregg
Sandrinella 'Sandra' Corleone (uncredited)
Buck Houghton
Senator with mustache (uncredited)
Sho Kosugi
Passerby in Coat with Cap Pulled Down (uncredited)
Gary Kurtz
Photographer in Court (uncredited)
Richard Matheson
Senator #3 (uncredited)
John Megna
Young Hyman Roth (uncredited)
Jay Rasumny
Street Vendor (uncredited)
Julian Voloshin
Sam Roth (uncredited)
Devi Morgan
Background (uncredited)