阿尔·帕西诺
Al Pacino
饰：迈克尔 Don Michael Corleone
黛安·基顿
Diane Keaton
饰：凯 Kay Corleone
罗伯特·杜瓦尔
Robert Duvall
饰：汤姆 Tom Hagen
约翰·凯泽尔
John Cazale
饰：弗雷多 Fredo Corleone
塔莉娅·夏尔
Talia Shire
饰：康妮·柯里昂Connie Corleone
李·斯特拉斯伯格
Lee Strasberg
饰：海曼·罗斯 Hyman Roth
迈克尔V·加佐
Michael Vincente Gazzo
饰：Frankie Pentangeli
G•D•斯普拉德林
G.D. Spradlin
饰：参议员帕特基尔 Senator Pat Geary
理查德·詹姆斯·布莱特
Richard Bright
饰：Al Neri
汤姆·罗斯奎
Tom Rosqui
饰：Rocco Lampone
布鲁诺·柯比
Bruno Kirby
饰：Young Peter Clemenza (as B. Kirby Jr.)
摩甘娜金
Morgana King
饰：Mama Corleone
莱奥波多·特里耶斯泰
Leopoldo Trieste
饰：Signor Roberto
多米尼克·查尼斯
Dominic Chianese
饰：Johnny Ola
特洛伊·多纳休
Troy Donahue
饰：Merle Johnson
乔·斯皮内尔
Joe Spinell
饰：Willi Cicci
詹姆斯·凯恩
James Caan
饰：Sonny Corleone
阿贝·维高达
Abe Vigoda
饰：Sal Tessio
Tere Livrano
Tere Livrano
饰：Theresa Hagen
菲伊·斯潘
Fay Spain
饰：Mrs. Marcia Roth
哈利·戴恩·斯坦通
Harry Dean Stanton
饰：F.B.I. Man #1
卡米因·卡里迪
Carmine Caridi
饰：Carmine Rosato
丹尼·爱罗
Danny Aiello
饰：Tony Rosato
卡迈恩·佛雷斯塔
Carmine Foresta
饰：Policeman
Father Joseph Medeglia
Father Joseph Medeglia
饰：Father Carmelo (as Father Joseph Medeglia)
卡门·阿尔根齐亚诺
The King
饰：Michael's Buttonman #2
乔·罗·格里普
Joe Lo Grippo
饰：Michael's Buttonman #3
Ignazio Pappalardo
饰：Mosca
彼得·多纳特
Peter Donat
饰：Questadt
汤姆·达尔格伦
Tom Dahlgren
饰：Fred Corngold
Phil Feldman
饰：Senator #1
罗杰·科尔曼
Roger Corman
饰：Senator #2
伊凡·科尔
Ivonne Coll
饰：Yolanda (as Yvonne Coll)
艾丽卡·约恩
Erica Yohn
饰：Governess
Italia Coppola
饰：Mama Corleone's Body (uncredited)
罗曼·科波拉
Roman Coppola
饰：Sonny Corleone as a Boy (uncredited)
朱莉·格雷格
Julie Gregg
饰：Sandra Corleone (uncredited)
Larry Guardino
Larry Guardino
饰：Vito's Uncle (uncredited)
小杉正一
ShôKosugi
饰：Passerby in Coat with Cap Pulled Down (uncredited)
康尼·梅森
Connie Mason
饰：Extra (uncredited)
理查德·麦瑟森
Richard Matheson
饰：Senator #3 (uncredited)
约翰·梅根纳
John Megna
饰：Young Hyman Roth (uncredited)
Frank Pesce
Frank Pesce
饰：Extra (uncredited)
Jay Rasumny
Jay Rasumny
饰：Street Vendor (uncredited)
Hank Robinson
Hank Robinson
饰：Man Guarding Hyman Roth (uncredited)
托尼·西里科
Tony Sirico
饰：Extra (uncredited) (unconfirmed)
Filomena Spagnuolo
饰：Extra in Little Italy (uncredited)
玛丽亚娜·希尔
Marianna Hill
饰：Deanna Corleone (as Mariana Hill)
Amerigo Tot
饰：Michael's Bodyguard
Maria Carta
饰：Vito's Mother
Oreste Baldini
Oreste Baldini
饰：Vito Andolini as a Boy
朱塞佩·西拉托
Giuseppe Sillato
饰：Don Francesco 'Ciccio'
Mario Cotone
Mario Cotone
饰：Don Tommasino
James Gounaris
James Gounaris
饰：Anthony Vito Corleone
David Baker
David Baker
饰：F.B.I. Man #2
Nick Discenza
饰：Bartender
威廉·鲍尔斯
William Bowers
饰：Senate Committee Chairman
约瑟夫·德拉·索尔特
Joseph Della Sorte
饰：Michael's Buttonman #1 (as Joe Della Sorte)
Ezio Flagello
饰：Impressario
Livio Giorgi
饰：Tenor in 'Senza Mamma'
凯瑟琳·贝勒
Kathleen Beller
饰：Girl in 'Senza Mamma' (as Kathy Beller)
Saveria Mazzola
Saveria Mazzola
饰：Signora Colombo
Tito Alba
饰：Cuban President Batista
Johnny Naranjo
饰：Cuban Translator
Elda Maida
Elda Maida
饰：Pentangeli's Wife
Salvatore Po
Salvatore Po
饰：Pentangeli's Brother
Andrea Maugeri
饰：Strollo
Peter LaCorte
Peter LaCorte
饰：Signor Abbandando
Vincent Coppola
饰：Street Vendor
Paul B. Brown
饰：Senator Ream
Joe De Nicola
饰：Attendant at Brothel (as J.D. Nicols)
Edward Van Sickle
饰：Ellis Island Doctor
Gabriella Belloni
饰：Ellis Island Nurse (as Gabria Belloni)
Richard Watson
Richard Watson
饰：Custom Official
Venancia Grangerard
饰：Cuban Nurse
Theresa Tirelli
饰：Midwife (as Theresa Tirelli)
加里·库尔茨
Gary Kurtz
饰：Photographer in Court (uncredited)
Laura Lyons
饰：(uncredited)
Victor Pujols
饰：Cuban Guerilla with Grenade (uncredited)
朱利安·沃洛辛
Julian Voloshin
饰：Sam Roth (uncredited)
罗伯特·德尼罗
Robert De Niro
饰：Vito Corleone
Gastone Moschin
Gastone Moschin
饰：Fanucci
弗兰克·西维罗
Frank Sivero
饰：Genco
弗朗西丝卡·德·萨维奥
Francesca De Sapio
饰：Young Mama Corleone
约翰·阿普雷亚
John Aprea
饰：Young Tessio
吉亚尼·罗素
Gianni Russo
饰：Carlo
Teresa Tirelli
饰：演员 Actor/Actress
索菲亚·科波拉
Sofia Carmina Coppola
饰：Child on Ship
George Holmes
饰：演员 Actor/Actress
Buck Houghton
饰：演员 Actor/Actress
Shep Houghton
饰：演员 Actor/Actress
Harrison Ressler
饰：演员 Actor/Actress
Al Roberts
饰：演员 Actor/Actress
Hank Robinson
李·斯特拉斯伯格
Lee Strasberg
饰：Hyman Roth
Abe Vigoda
饰：Sal Tessio