Joe Valachi

Vito Genovese

Maria Reina Valachi

Dominick Petrilli, aka "Gap"

Salvatore Maranzano

Ryan, federal agent

Gaetano Reina

Albert Anastasia

Letizia Reina

Lucky Luciano

Tony Bender

Donna Petrillo

Salierno

Buster

Giuseppe 'Joe the Boss' Masseria

Jane

Federal Investigator

Buck

Steven Ferrigno (uncredited)

Man of the clan (uncredited)

Irish member of Valachi gang (uncredited)

Winnie (uncredited)

Gangster (uncredited)

Prisoner with Valachi (uncredited)

Augie (uncredited)

Luciano's Henchman (uncredited)

Warden (uncredited)

Wedding party guest (uncredited)

Prison Guard (uncredited)

Frank (uncredited)

Commander of Fort Monmouth (uncredited)

Donna Petrillo's friend (uncredited)

Mary-Lou (uncredited)

Donald Valachi (uncredited)

Jane (uncredited)

Self (uncredited)

(uncredited)

Judge (uncredited)