David 'Noodles' Aaronson
Maximilian 'Max' Bercovicz
Deborah Gelly
James Conway O'Donnell
Carol
Frankie Monaldi
Joe
Patrick 'Patsy' Goldberg
Philip 'Cockeye' Stein
'Fat' Moe Gelly
Peggy
Young Noodles
Young Max / David Bailey
Young Deborah
Young Patsy
Young Cockeye
Young 'Fat' Moe Gelly
Dominic
Bugsy
Eve
Police Chief Vincent Aiello
Chicken Joe
Beefy
Trigger
Mandy
Young Peggy
Officer Whitey
Woman in the Puppet Theatre
Al Capuano
Fred Capuano
Johnny Capuano
Irving Gold
Friend of Young Deborah
Young Deborah (Double)
Monkey
Thug
Chinese Theater Spectator (uncredited)
Willie the Ape
Max's Mother
Crowning
Van Linden
Sharkey
Mrs. Aiello
Bugsy's Gang
Interviewer
Girl in Coffin
Adorable Old Man
Nurse Thompson
Reporter 1
Reporter 2
Reporter 3
Chauffeur
Cemetery Caretaker
Peggy's Mother
Drunk
Newstand Man
Mounted Policeman
2nd Mounted Policeman
Sgt. P. Halloran
Street Singer
Young Macrò
Foreman
One of Beefy's Thugs (uncredited)
Bugsy's Gang (uncredited)
Boy in Park (uncredited)
Speakeasy Drum Player (uncredited)
Newspaper Salesman (uncredited)
Speakeasy Banjo Player (uncredited)
Speakeasy Percussionist (uncredited)
David Bailey's Girlfriend (uncredited)
Deborah Gelly's Father (uncredited)
Waiter (uncredited)
Speakeasy Patron (uncredited)
Speakeasy Trumpet Player (uncredited)
Speakeasy Clarinet Player (uncredited)
Speakeasy Vocalist (uncredited)
Nurse (uncredited)
Pimp (uncredited)
Prostitute (uncredited)
Syndacalist (uncredited)