Al Pacino
Role: Don Michael Corleone
Marlon Brando
Role: Don Vito Corleone
Robert De Niro
Role: Young Vito Corleone
Robert Duvall
Role: Tom Hagen
James Caan
Role: Santino "Sonny" Corleone
John Cazale
Role: Frederico "Fredo" Corleone
Diane Keaton
Role: Kay Adams-Corleone
Talia Shire
Role: Constanzia "Connie" Corleone-Rizzi
Richard S. Castellano
Role: Peter Clemenza
Sterling Hayden
Role: Capt. Mark McCluskey
John Marley
Role: Jack Woltz
Richard Conte
Role: Don Emilio Barzini
Lee Strasberg
Role: Hyman Roth
Gastone Moschin
Role: Don Fanucci
Al Lettieri
Role: Virgil "The Turk" Sollozzo
Morgana King
Role: Carmela "Mama" Corleone
Richard Bright
Role: Al Neri
Michael V. Gazzo
Role: Frank Pentangeli
G. D. Spradlin
Role: Sen. Patrick Geary
Tom Rosqui
Role: Rocco Lampone
Marianna Hill
Role: Deanna Dunn-Corleone
Troy Donahue
Role: Merle Johnson
Al Martino
Role: Johnny Fontane
Rudy Bond
Role: Carmine Cuneo
Julie Gregg
Role: Sandrinella "Sandra" Corleone
Tere Livrano
Role: Theresa Hagen
Dominic Chianese
Role: Johnny Ola
Joe Spinell
Role: William "Willie" Cicci
Maria Carta
Role: Mrs. Andolini
Mario Cotone
Role: Don Tommasino
Simonetta Stefanelli
Role: Apollonia Vitelli-Corleone
Angelo Infanti
Role: Fabrizio
Saro Urzì
Role: Mr. Vitelli
Gianni Russo
Role: Carlo Rizzi (uncredited)
Abe Vigoda
Role: Salvatore "Sal" Tessio (uncredited)
Lenny Montana
Role: Luca Brasi (uncredited)
John Martino
Role: Paulie Gatto (uncredited)
Salvatore Corsitto
Role: Amerigo Bonasera (uncredited)
Alex Rocco
Role: Moe Greene (uncredited)
Tony Giorgio
Role: Bruno Tattaglia (uncredited)
Victor Rendina
Role: Philip Tattaglia (uncredited)