Don Vito Corleone
Michael Corleone
Tom Hagen
Santino "Sonny" Corleone
Peter Clemenza
Kay Adams-Corleone
Young Vito Corleone
Constanzia "Connie" Corleone-Rizzi
Capt. Mark McCluskey
Jack Woltz
Don Emilio Barzini
Hyman Roth
Don Fanucci
Frederico "Fredo" Corleone
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
Vito's Mother
Don Tommasino
Apollonia Vitelli-Corleone
Fabrizio
Don Tmmasino
Calò
Vitelli
Salvatore "Sal" Tessio (uncredited)
Luca Brasi (uncredited)
Paulie Gatto (uncredited)
Amerigo Bonasera (uncredited)
Moe Greene (uncredited)
Bruno Tattaglia (uncredited)
Philip Tattaglia (uncredited)