Al Pacino
Role: Don Michael Corleone
Robert Duvall
Role: Tom Hagen
Diane Keaton
Role: Kay Corleone
Robert De Niro
Role: Vito Corleone
John Cazale
Role: Frederico 'Fredo' Corleone
Talia Shire
Role: Constanzia 'Connie' Corleone
Lee Strasberg
Role: Hyman Roth
Michael V. Gazzo
Role: Frank Pentangeli
G. D. Spradlin
Role: Senator Pat Geary
Richard Bright
Role: Al Neri
Gastone Moschin
Role: Don Fanucci
Tom Rosqui
Role: Rocco Lampone
Bruno Kirby
Role: Young Clemenza
Frank Sivero
Role: Genco Abbandando
Francesca De Sapio
Role: Young Mama Corleone
Morgana King
Role: Mama Corleone
Marianna Hill
Role: Deanna Corleone
Leopoldo Trieste
Role: Signor Roberto
Dominic Chianese
Role: Johnny Ola
Amerigo Tot
Role: Michael's Bodyguard
Troy Donahue
Role: Merle Johnson
John Aprea
Role: Young Tessio
Joe Spinell
Role: William 'Willie' Cicci
Abe Vigoda
Role: Salvatore 'Sal' Tessio
Tere Livrano
Role: Theresa Hagen
Gianni Russo
Role: Carlo Rizzi
Maria Carta
Role: Mrs. Andolini
Oreste Baldini
Role: Young Vito
Giuseppe Sillato
Role: Don Francesco Ciccio
Mario Cotone
Role: Don Tommasino
James Gounaris
Role: Anthony Corleone
Fay Spain
Role: Mrs. Marcia Roth
Harry Dean Stanton
Role: F.B.I. Man #1
David Baker
Role: F.B.I. Man #2
Carmine Caridi
Role: Carmine Rosato
Danny Aiello
Role: Tony Rosato
Carmine Foresta
Role: Policeman
Nick Discenza
Role: Bartender
Joseph Medaglia
Role: Father Carmelo
William Bowers
Role: Senate Committee Chairman
Joseph Della Sorte
Role: Michael's Buttonman #1
Carmen Argenziano
Role: Michael's Buttonman #2
Joe Lo Grippo
Role: Michael's Buttonman #3
Ezio Flagello
Role: Impressario
Livio Giorgi
Role: Tenor in 'Senza Mamma'
Kathleen Beller
Role: Girl in 'Senza Mamma'
Saveria Mazzola
Role: Signora Colombo
Tito Alba
Role: Cuban President
Johnny Naranjo
Role: Cuban Translator
Elda Maida
Role: Pentangeli's Wife
Salvatore Po
Role: Pentangeli's Brother
Ignazio Pappalardo
Role: Mosca
Andrea Maugeri
Role: Strollo
Peter LaCorte
Role: Signor Abbandando
Vincent Coppola
Role: Street Vendor
Peter Donat
Role: Questadt
Tom Dahlgren
Role: Fred Corngold
Paul B. Brown
Role: Senator Ream
Phil Feldman
Role: Senator #1
Roger Corman
Role: Senator #2
Joe De Nicola
Role: Attendant at Brothel
Edward Van Sickle
Role: Ellis Island Doctor
Gabriella Belloni
Role: Ellis Island Nurse
Richard Watson
Role: Customs Official
Venancia Grangerard
Role: Cuban Nurse
Erica Yohn
Role: Governess
Teresa Tirelli
Role: Midwife
James Caan
Role: Sonny Corleone (uncredited)
Italia Coppola
Role: Mama Corleone's Body (uncredited)
Roman Coppola
Role: Sonny Corleone as a Boy (uncredited)
Sofia Coppola
Role: Child on Ship (uncredited)
Victor Pujols Faneyte
Role: Cuban Guerilla with Grenade (uncredited)
Julie Gregg
Role: Sandrinella 'Sandra' Corleone (uncredited)
Larry Guardino
Role: Vito's Uncle (uncredited)
Buck Houghton
Role: Senator with Mustache (uncredited)
Sho Kosugi
Role: Passerby in Coat with Cap Pulled Down (uncredited)
Gary Kurtz
Role: Photographer in Court (uncredited)
Richard Matheson
Role: Senator #3 (uncredited)
John Megna
Role: Young Hyman Roth (uncredited)
Jay Rasumny
Role: Street Vendor (uncredited)
Filomena Spagnuolo
Role: Extra in Little Italy (uncredited)
Julian Voloshin
Role: Sam Roth (uncredited)
Laura Lyons
Role: Guest (uncredited)
Harrison Ressler
Role: Crowd (uncredited)