 John BarrymoreDuke of Charmerace | Duke of Charmerace |
 Lionel BarrymoreDetective Guerchard | Detective Guerchard |
 Karen MorleySonia | Sonia |
 John MiljanPrefect of Police | Prefect of Police |
 Tully MarshallGaston Gourney-Martin | Gaston Gourney-Martin |
 Henry ArmettaSheriff's Man | Sheriff's Man |
 George DavisSheriff's Man | Sheriff's Man |
 John DavidsonGourney-Martin's Butler | Gourney-Martin's Butler |
| JJames T. MackLaurent | Laurent |
 Mary Jane IrvingMarie | Marie |
 Mischa AuerLouvre Tour Guide (uncredited) | Louvre Tour Guide (uncredited) |
 Symona BonifaceParty Guest (uncredited) | Party Guest (uncredited) |
| JJack ByronLouvre Guard (uncredited) | Louvre Guard (uncredited) |
| JJack DeeryGendarme (uncredited) | Gendarme (uncredited) |
 Claire Du BreyMother at the Louvre (uncredited) | Mother at the Louvre (uncredited) |
 Geraldine DvorakParty Guest (uncredited) | Party Guest (uncredited) |
 Christian J. FrankDetective (uncredited) | Detective (uncredited) |
 Olaf HyttenParty Guest (uncredited) | Party Guest (uncredited) |
 Carl M. LevinessParty Guest (uncredited) | Party Guest (uncredited) |
 Theodore LorchLupin's Butler (uncredited) | Lupin's Butler (uncredited) |
 Frank McLureJeweller (uncredited) | Jeweller (uncredited) |
| KKing MojaveParty Guest (uncredited) | Party Guest (uncredited) |
 Claude PaytonGendarme (uncredited) | Gendarme (uncredited) |
| AAlbert PetitParty Guest (uncredited) | Party Guest (uncredited) |
 Georges RenaventDuval (uncredited) | Duval (uncredited) |
| HHenry RoquemoreCustomer (uncredited) | Customer (uncredited) |
| MMilton RoyceParty Guest (uncredited) | Party Guest (uncredited) |
 Hector V. SarnoGendarme (uncredited) | Gendarme (uncredited) |
 Joe SawyerLeroux (uncredited) | Leroux (uncredited) |
| HHenry SedleyAccused Officer (uncredited) | Accused Officer (uncredited) |
