出演者一覧（41名）
アル・パチーノ
Don Michael Corleone
マーロン・ブランド
Don Vito Corleone
ロバート・デ・ニーロ
Young Vito Corleone
ロバート・デュヴァル
Tom Hagen
ジェームズ・カーン
Santino "Sonny" Corleone
John Cazale
Frederico "Fredo" Corleone
ダイアン・キートン
Kay Adams-Corleone
Talia Shire
Constanzia "Connie" Corleone-Rizzi
Richard S. Castellano
Peter Clemenza
Sterling Hayden
Capt. Mark McCluskey
John Marley
Jack Woltz
Richard Conte
Don Emilio Barzini
Lee Strasberg
Hyman Roth
ガストーネ・モスキン
Don Fanucci
Al Lettieri
Virgil "The Turk" Sollozzo
Morgana King
Carmela "Mama" Corleone
Richard Bright
Al Neri
G.D. Spradlin
Sen. Patrick Geary
Tom Rosqui
Rocco Lampone
Marianna Hill
Deanna Dunn-Corleone
Troy Donahue
Merle Johnson
Al Martino
Johnny Fontane
ルディ・ボンド
Carmine Cuneo
Julie Gregg
Sandrinella "Sandra" Corleone
Tere Livrano
Theresa Hagen
Dominic Chianese
Johnny Ola
Joe Spinell
William "Willie" Cicci
Maria Carta
Mrs. Andolini
?
Mario Cotone
Don Tommasino
Simonetta Stefanelli
Apollonia Vitelli-Corleone
Angelo Infanti
Fabrizio
Franco Citti
Calò
Saro Urzì
Mr. Vitelli
Gianni Russo
Carlo Rizzi (uncredited)
Abe Vigoda
Salvatore "Sal" Tessio (uncredited)
Lenny Montana
Luca Brasi (uncredited)
John Martino
Paulie Gatto (uncredited)
Salvatore Corsitto
Amerigo Bonasera (uncredited)
Alex Rocco
Moe Greene (uncredited)
Tony Giorgio
Bruno Tattaglia (uncredited)
Victor Rendina
Philip Tattaglia (uncredited)