Al Pacino
Don Michael Corleone (4 eps)
Marlon Brando
Don Vito Corleone (4 eps)
Robert De Niro
Young Vito Corleone (4 eps)
Robert Duvall
Tom Hagen (4 eps)
James Caan
Santino "Sonny" Corleone (4 eps)
John Cazale
Frederico "Fredo" Corleone (4 eps)
Diane Keaton
Kay Adams-Corleone (4 eps)
Talia Shire
Constanzia "Connie" Corleone-Rizzi (4 eps)
Richard S. Castellano
Peter Clemenza (4 eps)
Sterling Hayden
Capt. Mark McCluskey (4 eps)
John Marley
Jack Woltz (4 eps)
Richard Conte
Don Emilio Barzini (4 eps)
Lee Strasberg
Hyman Roth (4 eps)
Gastone Moschin
Don Fanucci (4 eps)
Al Lettieri
Virgil "The Turk" Sollozzo (4 eps)
Morgana King
Carmela "Mama" Corleone (4 eps)
Richard Bright
Al Neri (4 eps)
Michael V. Gazzo
Frank Pentangeli (4 eps)
G. D. Spradlin
Sen. Patrick Geary (4 eps)
Tom Rosqui
Rocco Lampone (4 eps)
Marianna Hill
Deanna Dunn-Corleone (4 eps)
Troy Donahue
Merle Johnson (4 eps)
Al Martino
Johnny Fontane (4 eps)
Rudy Bond
Carmine Cuneo (4 eps)
Julie Gregg
Sandrinella "Sandra" Corleone (4 eps)
Tere Livrano
Theresa Hagen (4 eps)
Dominic Chianese
Johnny Ola (4 eps)
Joe Spinell
William "Willie" Cicci (4 eps)
Maria Carta
Mrs. Andolini (4 eps)
Mario Cotone
Don Tommasino (4 eps)
Simonetta Stefanelli
Apollonia Vitelli-Corleone (4 eps)
Angelo Infanti
Fabrizio (4 eps)
Franco Citti
Calò (4 eps)
Saro Urzì
Mr. Vitelli (4 eps)
Gianni Russo
Carlo Rizzi (uncredited) (4 eps)
Abe Vigoda
Salvatore "Sal" Tessio (uncredited) (4 eps)
John Martino
Paulie Gatto (uncredited) (4 eps)
Salvatore Corsitto
Amerigo Bonasera (uncredited) (4 eps)
Alex Rocco
Moe Greene (uncredited) (4 eps)
Tony Giorgio
Bruno Tattaglia (uncredited) (4 eps)
Victor Rendina
Philip Tattaglia (uncredited) (4 eps)