 Basil RathboneBaron Wolf von Frankenstein | Baron Wolf von Frankenstein |
 Boris KarloffThe Monster | The Monster |
 Bela LugosiYgor | Ygor |
 Lionel AtwillInspector Krogh | Inspector Krogh |
 Josephine HutchinsonElsa von Frankenstein | Elsa von Frankenstein |
 Donnie DunaganPeter von Frankenstein | Peter von Frankenstein |
 Emma DunnAmelia | Amelia |
 Edgar NortonThomas Benson | Thomas Benson |
| PPerry IvinsFritz | Fritz |
 Lawrence GrantBürgermeister | Bürgermeister |
 Lionel BelmoreEmil Lang | Emil Lang |
 Michael MarkEwald Neumüller | Ewald Neumüller |
 Caroline Frances CookeFrau Neumüller | Frau Neumüller |
 Gustav von SeyffertitzBurgher | Burgher |
 Lorimer JohnstonBurgher | Burgher |
 Tom RickettsBurgher | Burgher |
 Ward BondGendarme at Gate (uncredited) | Gendarme at Gate (uncredited) |
| BBetty ChayUndetermined Role (uncredited) | Undetermined Role (uncredited) |
 Harry CordingBearded Gendarme (uncredited) | Bearded Gendarme (uncredited) |
| JJack CurtisActor (uncredited) | Actor (uncredited) |
| FFred FarrellVillager (uncredited) | Villager (uncredited) |
| JJack HarrisExtra (uncredited) | Extra (uncredited) |
 Russ PowellWebber - Burgher (uncredited) | Webber - Burgher (uncredited) |
 Clarence WilsonDr. Berger (uncredited) | Dr. Berger (uncredited) |
