Michael
Tom Hagen
Kay
Vito Corleone (as Robert DeNiro)
Fredo Corleone
Connie Corleone
Hyman Roth
Frankie Pentangeli
Sen. Pat Geary
Al Neri
Fanucci (as Gaston Moschin)
Rocco Lampone
Young Clemenza (as B. Kirby Jr.)
Genco
Young Mama Corleone (as Francesca de Sapio)
Mama Corleone
Deanna Corleone (as Mariana Hill)
Signor Roberto
Johnny Ola
Michael's Bodyguard
Merle Johnson
Young Tessio
Willi Cicci
Tessio
Theresa Hagen
Carlo
Vito's Mother
Vito Andolini - as a Boy
Don Francesco
Don Tommasino
Anthony Corleone
Mrs. Marcia Roth
F.B.I. Man #1
F.B.I. Man #2 (as David Baker)
Carmine Rosato
Tony Rosato
Policeman
Bartender
Father Carmelo (as Father Joseph Medeglia)
Senate Committee Chairman
Michael's Buttonman #1 (as Joe Della Sorte)
Michael's Buttonman #2
Michael's Buttonman #3
Impressario
Tenor in 'Senza Mamma'
Girl in 'Senza Mamma' (as Kathy Beller)
Signora Colombo
Cuban President
Cuban Translator
Pentangeli's Wife
Pentangeli's Brother
Mosca
Strollo
Signor Abbandando
Street Vendor
Questadt
Fred Corngold
Sen. Ream
Senator #1
Senator #2
Yolanda (as Yvonne Coll)
Attendant at Brothel (as J.D. Nicols)
Ellis Island Doctor
Ellis Island Nurse (as Gabria Belloni)
Customs Official
Cuban Nurse
Governess
Midwife (as Theresa Tirelli)
Senate Hearing Spectator (uncredited)
Sonny Corleone (uncredited)
Mama Corleone's Body (uncredited)
Sonny Corleone - as a Boy (uncredited)
Child on Ship (uncredited)
Cuban Guerilla with Grenade (uncredited)
Extra (uncredited)
Sandra Corleone (uncredited)
Vito's Uncle (uncredited)
Victor Rizzi (Connie's Son) (uncredited)
Senator with Mustache (uncredited)
Gianna Hagen (uncredited)
Waiter #1 (uncredited)
Passerby in Coat with Cap Pulled Down (uncredited)
Photographer in Court (uncredited)
Military officer (uncredited)
Klingman - Casino Owner (uncredited)
Guest (uncredited)
Senator #3 (uncredited)
Young Hyman Roth (uncredited)
Street Vendor (uncredited)
Crowd (uncredited)
Vaudeville Dancer (uncredited)
Man Who Greets Vito (uncredited)
Extra in Little Italy (uncredited)
Sam Roth (uncredited)