- Rod Cameron
- Rex Bennett
- Roland Got
- Chang Sing
- Constance Worth
- Vivian Marsh
- Nino Pipitone
- Oyama Haruchi
- Noel Cravat
- Ranga
- George J. Lewis
- Lugo
- Maxine Doyle
- Marie
- Donald Kirke
- Muller
- Ivan Miller
- Customs Inspector
- Walter Fenner
- Williams
- C. Montague Shaw
- Nicholson
- Harry Burns
- Tony Mills
- Forbes Murray
- James Kennedy
- Hooper Atchley
- Harrison J. Caldwell
- Robert Homans
- Gorman
- Allen Jung
- Fuji
- Mary Bayless
- Nurse-Receptionist
- Virginia Carroll
- Room Nurse
- Edmund Cobb
- Stewart, Boulder Dam Commissioner
- Bill Cody
- BIt Role
- Dick French
- Airport thug
- Paul Fung
- Sub Captain
- Bud Geary
- Paint Factory thug
- Lawrence Grant
- Sir John Brookfield
- Kenneth Harlan
- Lab Guard / Officer Casey (archive footage) (uncredited)
- John James
- Boulder Dam Radio Dispatcher
- George Lynn
- Thug Pilot
- Norman Nesbitt
- Radio Newscaster
- Eddie Parker
- Phony Butler
- Gil Perkins
- Mansion Heavy / Intern (archive footage) (uncredited)
- Eddie Phillips
- Laundry Clerk-thug
- Stanley Price
- Gabby Gibbs
- Tom Seidel
- Agent Spencer
- Tom Steele
- Garage Thug
- Elliott Sullivan
- Turner, a Thug
- Harry Tauvera
- Sub Crewman
- Ken Terrell
- Garage Thug / Yacht Thug / Explosives Thug / Warehouse Thug (archive footage) (uncredited)
- Dale Van Sickel
- Pier Thug
- Norman Willis
- German Submarine Captain
