- Brian Donlevy
- Dr. Franticek Svoboda / Karel Vanek
- Walter Brennan
- Prof. Stephen Novotny
- Anna Lee
- Masha Novotny
- Gene Lockhart
- Emil Czaka
- Dennis O'Keefe
- Jan Horak
- Margaret Wycherly
- Ludmilla Novotny
- Nana Bryant
- Mrs. Hellie Novotny
- William Roy
- Beda Novotny
- Hans Heinrich von Twardowski
- Reinhard Heydrich
- Alexander Granach
- Gestapo Insp. Alois Gruber
- Tonio Selwart
- Chief of Gestapo Kurt Haas
- Jonathan Hale
- Dedic
- Lionel Stander
- Banya
- Sarah Padden
- Mrs. Georgia Dvorak
- Edmund MacDonald
- Dr. Pillar
- Byron Foulger
- Bartos
- Virginia Farmer
- Mrs. Nimitz
- Ludwig Donath
- Schirmer
- George Irving
- Neeval
- James Bush
- Peacock
- Arno Frey
- Camp Lt. Itnut
- Lester Sharpe
- Rudy
- Arthur Loft
- Gen. Votruba
- Reinhold Schünzel
- Gestapo Insp. Ritter
- John Abbott
- Hostage
- Louis Adlon
- Adjutant
- Erville Alderson
- Liberal Official
- Richard Alexander
- Slugger in Theater
- Jack Alfred
- Busboy
- Louis V. Arco
- Nazi Official
- Florence Auer
- Czech Patriot
- Felix Basch
- (uncredited)
- Hank Bell
- Driver
- William 'Billy' Benedict
- Kylar
- Edna Bennett
- Pregnant Woman
- Margaret Bert
- Market Woman
- Oscar Blank
- Hostage
- Lane Bradford
- Gestapo Officer
- Harry C. Bradley
- Townsman
- Frederic Brunn
- SS Officer
- Willy Castello
- SS Guard
- Richard Clarke
- Priest
- Steve Clemente
- Knife Thrower
- Chester Conklin
- Cook
- Edith Conrad
- Woman in Audience
- Max Davidson
- Bearded Man
- Bryn Davis
- Girl
- Earle S. Dewey
- Wine Waiter
- Jimmy Dime
- Gestapo Detective
- Lester Dorr
- Aldrich Krapke
- Tex Driscoll
- Hostage
- Ralph Dunn
- Czech Policeman
- Gretl Dupont
- Angry Woman
- David Durand
- Bicycle Boy
- James Eagles
- Svatak
- Edward Earle
- Professor
- Fern Emmett
- Peasant Woman
- Fred Essler
- Dr. Kesselbach
- William Farnum
- Viktorin
- Betty Farrington
- Heavyset Woman
- Dwight Frye
- Hostage
- Hans Fuerberg
- Personal Adjutant
- Jack George
- Polcar
- Inna Gest
- Hatcheck Girl
- Gibson Gowland
- Member of Crowd Confronting Masha
- George Guhl
- Workman
- William Haade
- Mildrad
- Liesl Handl
- Slugger's Girlfriend in Theater
- Sam Harris
- Man at Briefing
- Bud Jamison
- Fat Man
- Eddie Kane
- Novak
- Victor Kendall
- SS Leader
- Manart Kippen
- Dovolga
- Fred Kohler Jr.
- Czech Patriot
- Kurt Kreuger
- Gestapo Officer
- Rita La Roy
- Girl
- Hope Landin
- Czech Patriot
- Carl M. Leviness
- Man at Briefing
- Rolf Lindau
- De Lauge
- Emmett Lynn
- Gerta
- Robert Malcolm
- Czech Patriot
- Merrill McCormick
- Cabbie
- Claire McDowell
- Counterwoman
- Paul McVey
- Jan Pestuca
- John Meredith
- Czech Man
- Philip Merivale
- Policeman
- Louis Merrill
- Industrialist
- Peter Michael
- SS Captain
- Charles Middleton
- Patriot at Meeting with Svoboda
- Robert Milasch
- Hostage
- Edwin Mills
- Eduard
- Harold Minjir
- Butler
- Frances Morris
- Dr. Svoboda's Nurse
- George N. Neise
- Mueller
- Carl Neubert
- Economist
- Kurt Neumann
- SS Man
- Manuel ParÃs
- Townsman on Street
- John Piffle
- Industrialist
- Russ Powell
- Tobacconist
- Paul Power
- Man at Briefing
- Lucien Prival
- Policeman
- Frank Reicher
- Interpreter
- Otto Reichow
- Gestapo Agent Schultz
- Albin Robeling
- Clerk
- Ernest Roberts
- (uncredited)
- Henry Roquemore
- Patriot at Meeting
- Hans Schumm
- Sergeant
- Janet Shaw
- Katerina Honiga
- George Sherwood
- SS Lieutenant
- Mabel Smaney
- Woman on Street
- Pietro Sosso
- Waiter
- Robert R. Stephenson
- Nazi Guard in Visitors' Pen
- Carl Stockdale
- Cigarette Smoker
- Henry Sylvester
- Tall Czech
- Forrest Taylor
- Pipe Smoker
- Walter Thiele
- Police Official
- Sigfrid Tor
- Gescky
- Fred Trowbridge
- Man in Audience
- Lisl Valetti
- Secretary
- Philip Van Zandt
- Officer
- Lucio Villegas
- Townsman at Briefing
- Emmett Vogan
- Hostage Wearing Glasses
- Hans von Morhart
- Policeman
- Sam Waagenaar
- SS Man
- Fay Wall
- Secretary
- Eddy Waller
- Hansom Cab Driver
- Crane Whitley
- SS Headquarters Man
- Guy Wilkerson
- Santrock
- Harry Wilson
- Ugly German Bodyguard
