Al Pacino character Don Michael Corleone
Robert Duvall character Tom Hagen
Diane Keaton character Kay Corleone
Robert De Niro character Don Vito Corleone
John Cazale character Frederico 'Fredo' Corleone
Talia Shire character Constanzia 'Connie' Corleone
Lee Strasberg character Hyman Roth
Michael V. Gazzo character Frank Pentangeli
G. D. Spradlin character Senator Pat Geary
Richard Bright character Al Neri
Francesca De Sapio character Young Carmela
Oreste Baldini character Young Vito
Gastone Moschin character Don Fanucci
Giuseppe Sillato character Don Francesco Ciccio
Bruno Kirby character Young Clemenza
Frank Sivero character Genco Abbandando
Morgana King character Carmela 'Mama' Corleone
Marianna Hill character Deanna Corleone
Leopoldo Trieste character Signor Roberto
Dominic Chianese character Johnny Ola
Fay Spain character Mrs. Marcia Roth
Harry Dean Stanton character F.B.I. Man #1
Danny Aiello character Tony Rosato
Roger Corman character Senator #2
William Bowers character Senate Committee Chairman
James Caan character Santino 'Sonny' Corleone
Tom Rosqui character Rocco Lampone
Amerigo Tot character Michael's Bodyguard
Troy Donahue character Merle Johnson
John Aprea character Young Tessio
Abe Vigoda character Tessio
Tere Livrano character Theresa Hagen
Gianni Russo character Carlo
Maria Carta character Vito's mother
Mario Cotone character Don Tommasino
Carmine Caridi character Carmine Rosato
Carmine Foresta character Policeman
Joe Spinell character Willi Cicci
Kathleen Beller character Girl in 'Senza Mamma' (uncredited)
Ivonne Coll character Yolanda (uncredited)
Roman Coppola character Sonny Corleone as a Boy (uncredited)
Sofia Coppola character Child on Ship (uncredited)
Sho Kosugi character Passerby in Coat with Cap Pulled Down (uncredited)
James Gounaris character Anthony Corleone (uncredited)
Nick Discenza character Bartender (uncredited)
Joseph Medaglia character Father Carmelo (uncredited)
Joseph Della Sorte character Michael's Buttonman #1 (uncredited)
Carmen Argenziano character Michael's Buttonman #2 (uncredited)
Joe Lo Grippo character Michael's Buttonman #3 (uncredited)
Ezio Flagello character Impressario (uncredited)
Livio Giorgi character Tenor in 'Senza Mamma' (uncredited)
Saveria Mazzola character Signora Colombo (uncredited)
Tito Alba character Cuban President (uncredited)
Johnny Naranjo character Cuban Translator (uncredited)
Elda Maida character Pentangeli's Wife (uncredited)
Salvatore Po character Pentangeli's Brother (uncredited)
Ignazio Pappalardo character Mosca (uncredited)
Andrea Maugeri character Strollo (uncredited)
Peter LaCorte character Signor Abbandando (uncredited)
Vincent Coppola character Street Vendor (uncredited)
Peter Donat character Questadt (uncredited)
Tom Dahlgren character Fred Corngold (uncredited)
Phil Feldman character Senator #1 (uncredited)
Joe De Nicola character Attendant at Brothel (uncredited)
Edward Van Sickle character Ellis Island Doctor (uncredited)
Gabriella Belloni character Ellis Island Nurse (uncredited)
Venancia Grangerard character Cuban Nurse (uncredited)
Erica Yohn character Governess (uncredited)
Gary Kurtz character Photographer in Court (uncredited)
Connie Mason character (uncredited)
Frank Pesce character Extra (uncredited)
Victor Pujols Faneyte character Cuban Guerilla with Grenade (uncredited)
Julie Gregg character Sandra Corleone (uncredited)
Larry Guardino character Vito's Uncle (uncredited)
Buck Houghton character Senator with mustache (uncredited)
Richard Matheson character Senator #3 (uncredited)
John Megna character Young Hyman Roth (uncredited)
Jay Rasumny character Street Vendor (uncredited)
Filomena Spagnuolo character Extra in Little Italy (uncredited)
Julian Voloshin character Sam Roth (uncredited)
Italia Coppola character Mama Corleone's Body (uncredited)