Don Michael Corleone
Don Vito Corleone
Young Vito Corleone
Tom Hagen
Santino "Sonny" Corleone
Frederico "Fredo" Corleone
Kay Adams-Corleone
Constanzia "Connie" Corleone-Rizzi
Peter Clemenza
Capt. Mark McCluskey
Jack Woltz
Don Emilio Barzini
Hyman Roth
Don Fanucci
Virgil "The Turk" Sollozzo
Carmela "Mama" Corleone
Al Neri
Frank Pentangeli
Sen. Patrick Geary
Rocco Lampone
Deanna Dunn-Corleone
Merle Johnson
Johnny Fontane
Carmine Cuneo
Sandrinella "Sandra" Corleone
Theresa Hagen
Johnny Ola
William "Willie" Cicci
Mrs. Andolini
Don Tommasino
Apollonia Vitelli-Corleone
Fabrizio
Calò
Mr. Vitelli
Carlo Rizzi (uncredited)
Salvatore "Sal" Tessio (uncredited)
Luca Brasi (uncredited)
Paulie Gatto (uncredited)
Amerigo Bonasera (uncredited)
Moe Greene (uncredited)
Bruno Tattaglia (uncredited)
Philip Tattaglia (uncredited)