Al Pacino

Don Michael Corleone

Robert Duvall

Tom Hagen

Diane Keaton

Kay Corleone

Robert De Niro

Vito Corleone

John Cazale

Frederico 'Fredo' Corleone

Talia Shire

Constanzia 'Connie' Corleone

Lee Strasberg

Hyman Roth

Michael V. Gazzo

Frank Pentangeli

G.D. Spradlin

Senator Pat Geary

Richard Bright

Al Neri

Gastone Moschin

Don Fanucci

Tom Rosqui

Rocco Lampone

Bruno Kirby

Young Clemenza

Frank Sivero

Genco Abbandando

Francesca De Sapio

Young Mama Corleone

Morgana King

Mama Corleone

Marianna Hill

Deanna Corleone

Leopoldo Trieste

Signor Roberto

Dominic Chianese

Johnny Ola

Amerigo Tot

Michael's Bodyguard

Troy Donahue

Merle Johnson

John Aprea

Young Tessio

Joe Spinell

William 'Willie' Cicci

Abe Vigoda

Salvatore 'Sal' Tessio

Tere Livrano

Theresa Hagen

Gianni Russo

Carlo Rizzi

Maria Carta

Mrs. Andolini

Oreste Baldini

Young Vito

Fay Spain

Mrs. Marcia Roth

Harry Dean Stanton

F.B.I. Man #1

David Baker

F.B.I. Man #2

Carmine Caridi

Carmine Rosato

Danny Aiello

Tony Rosato

William Bowers

Senate Committee Chairman

Carmen Argenziano

Michael's Buttonman #2

Kathleen Beller

Girl in 'Senza Mamma'

Peter Donat

Questadt

Roger Corman

Senator #2

Ivonne Coll

Yolanda

Erica Yohn

Governess

James Caan

Sonny Corleone (uncredited)

Roman Coppola

Sonny Corleone as a Boy (uncredited)

Sofia Coppola

Child on Ship (uncredited)

Julie Gregg

Sandrinella 'Sandra' Corleone (uncredited)

Buck Houghton

Senator with Mustache (uncredited)

Sho Kosugi

Passerby in Coat with Cap Pulled Down (uncredited)

Gary Kurtz

Photographer in Court (uncredited)

Richard Matheson

Senator #3 (uncredited)

John Megna

Young Hyman Roth (uncredited)

Jay Rasumny

Street Vendor (uncredited)

Julian Voloshin

Sam Roth (uncredited)

Laura Lyons

Guest (uncredited)