 Mel FerrerStephen Orlac | Stephen Orlac |
 Christopher LeeNero the magician | Nero the magician |
 Dany CarrelRégina / Li-Lang | Régina / Li-Lang |
 Lucile Saint-SimonLouise Cochrane Orlac | Louise Cochrane Orlac |
 Felix AylmerDr. Francis Cochrane | Dr. Francis Cochrane |
 Peter ReynoldsMr. Felix | Mr. Felix |
 Basil SydneyMaurice Seidelman | Maurice Seidelman |
 Campbell SingerInspector Henderson | Inspector Henderson |
 Donald WolfitProfessor Volchett | Professor Volchett |
 Donald PleasenceGraham Coates | Graham Coates |
 Peter Bennett1st Member | 1st Member |
 George Merritt2nd Member | 2nd Member |
 Arnold DiamondDresser | Dresser |
 Janina FayeChild | Child |
 Gertan KlauberFairground attendant | Fairground attendant |
| WWalter RandallWaiter | Waiter |
| YYanilouEmilie | Emilie |
 David PeelPilot | Pilot |
 Anita Sharp-BolsterVolcheff's Assistant | Volcheff's Assistant |
 Edouard HemmeAnge | Ange |
 Mireille PerreyMadame Aliberti | Madame Aliberti |
 Manning WilsonInspector Jagger | Inspector Jagger |
| FFranca BelljCell Whore (uncredited) | Cell Whore (uncredited) |
| Peter Bennett1st Member (uncredited) | 1st Member (uncredited) |
| EErnest BlythNightclub Audience (uncredited) | Nightclub Audience (uncredited) |
| FFred DavisDetective (uncredited) | Detective (uncredited) |
| AArthur DibbsNightclub Audience Member (uncredited) | Nightclub Audience Member (uncredited) |
| PPierre FerrariAmbulance Attendant (uncredited) | Ambulance Attendant (uncredited) |
| JJean FountaineFrench Waiter (uncredited) | French Waiter (uncredited) |
| CCharles GilliardDetective (uncredited) | Detective (uncredited) |
