John Dillinger
Melvin Purvis
Billie Frechette
'Red' Hamilton
Agent Carter Baum
J. Edgar Hoover
Homer Van Meter
Charles Winstead
Phil D'Andrea
Alvin Karpis
Harry 'Pete' Pierpont
Martin Zarkovich
Frank Nitti
Gerry Campbell
Clarence Hurt
Charles Makley
Tommy Carroll
Louis Piquett
Agent John Madala
Baby Face Nelson
Agent Hugh Clegg
Anna Sage
Gilbert Catena
Anna Patzke
Polly Hamilton
Warden Baker
Carol Slayman
Pretty Boy Floyd
Turnkey
Ed Shouse
Guard Dainard
Walter Dietrich
Jim Leslie
Earl Adams
Viola Norris
Toddler on Farm
Agent Warren Barton
Police Chief Fultz
Sport
Oscar Lieboldt
Harry Berman
Grover Weyland
Tellers
Angry Cop
Farmer
Officer Chester Boyard
Senator McKellar
Harry Suydam
Clyde Tolson
Hoover Reporter #1
Hoover Reporter #2
Hoover Reporter #3
Hoover Reporter #4
Torch Singer
Doorman at Gold Coast
Agent Sam Cowley
Agent Julius Rice
Agent William Rorer
Agent Harold Reinecke
Doris Rogers
May Minczeles
Customer at Steuben Club
Helen Gillis
Porter at Union Station
Cop Eyman
Deputy
Sheriff Lillian Holley
Reporter #1
Reporter #2
Reporter #3
Photographer
Robert Estill
Herbert Youngblood
Judge Murray
Sam Cahoon
Guard Bryant
Deputy Blunk
Edward Saager
Reporter
Other Jr. G-Man
Harry Berg
Jacob Solomon
Joe Pawlowski
Emil Wanatka
Doctor
Agent Ray Suran
Agent Ralph Brown
Jimmy Probasco
Freddie Barker
Doc Barker
Captain O'Neill
Special Agent
Agent Sopsic
Other East Chicago Cop
Irene the Ticket Taker
Ella Natasky
Prisoner (uncredited)
Coat Check Girl (uncredited)
FBI Agent (uncredited)