- Rod Cameron
- Rex Bennett
- Joan Marsh
- Janet Blake
- Duncan Renaldo
- Capt. Pierre LaSalle
- Lionel Royce
- Baron von Rommler / Sultan Abou Ben Ali
- Kurt Kreuger
- Ernst Muller
- Frederic Brunn
- Wolfe
- Sigfrid Tor
- Luger
- Georges Renavent
- Armand
- Kurt Katch
- Kurt Hauptmann [Ch. 1]
- Ralf Harolde
- Riverboat Captain [Ch. 1]
- Wilhelm von Brincken
- Capt. Boschert [Ch. 7]
- William Yetter Sr.
- Submarine Commandant [Ch. 3]
- Hans von Morhart
- Submarine First Officer [Ch. 3]
- Erwin Goldi
- Col. von Raeder [Ch. 1]
- Frederick Worlock
- Sir James Langley [Ch. 15]
- Ed Agresti
- French Officer [Ch. 10]
- Frank Alten
- Schloss [Ch. 1]
- Nino Bellini
- French Supply Terminal Officer [Ch. 10]
- John Bleifer
- Kasar [Ch. 5]
- Jack Chefe
- French Soldier with Bomb Detector [Ch. 4]
- John Daheim
- Cave Heavy [Ch. 9]
- John Davidson
- Sheik [Ch. 2]
- George DeNormand
- Elmir [Ch. 8]
- Walter Fenner
- Sheik Fedallah [Ch. 12]
- Bud Geary
- Blacksmith [Ch. 11]
- Augie Gomez
- M-23 [Ch. 5]
- Duke Green
- Sailor on Deck [Ch. 1-2] / Ambusher 1 [Ch. 3] / Rama [Ch. 6] / Fezal [Chs. 8-9] / Karl [Ch. 11] / Sheik's Guard and Enemy Bushwacker [Ch. 12] / Lobby Heavy 2 [Ch. 14] (uncredited)
- Leonard Hampton
- Burier 2 [Ch. 8]
- Reed Howes
- American Officer [Ch. 5]
- Jack La Rue
- Hassan [Ch. 6]
- Charles La Torre
- Sufi [Ch. 5]
- Emily LaRue
- Zara [Ch. 5]
- George J. Lewis
- Kaba [Ch.9]
- Carey Loftin
- Workman [Ch. 6] / Arab 1 [Ch. 7] (uncredited)
- Jacques Lory
- Fireman 2 [Ch. 1]
- George Magrill
- Arab Thug at Sub Base Winch [Ch.3]
- Paul Marion
- Abdul [Chs. 12-13]
- Alex Montoya
- Arab
- Norman Nesbitt
- American Newscaster [Ch.2]
- Jack O'Shea
- Marga [Ch. 2]
- Eddie Parker
- Karl Koche [Ch. 7] / Cafe Heavy 2 [Ch. 10] (uncredited)
- Eddie Phillips
- Bisra [Ch. 8]
- Buddy Roosevelt
- Sniper [Ch. 6]
- John Royce
- German Officer [Ch. 1]
- Harry Semels
- Burier 1 [Ch. 8]
- Nick Shaid
- Peasant
- George Sorel
- Doctor [Ch. 15]
- Paul Stathes
- Arab
- Tom Steele
- Cafe Heavy 1 [Ch. 10]
- Ken Terrell
- Fireman 1 [Ch. 1] / Ahmed Ali [Chs. 3-4] / Workshop Arab [Ch.8] / Warehouse Arab [Ch.9] / Rokan [Ch. 10-11] / Sheik's Guard [Ch.12] / Lobby Heavy 1 [Ch. 14] / Residence Guard [Ch. 15] (uncredited)
- Anthony Warde
- Relzah [Ch. 12-13]
- Joe Yrigoyen
- Ambusher 2 [Ch. 3] / Arab 2 [Ch. 7] / Ray Heavy with Hand Grenades [Ch. 11] / Bushwacker [Ch. 12] / Wallah [Ch. 13] / Lobby Heavy 3 [Ch. 14] (uncredited)
