 Curd JürgensProfessor Immanuel Rath | Professor Immanuel Rath |
 May BrittLola-Lola | Lola-Lola |
 Theodore BikelKlepert | Klepert |
 John BannerPrincipal Harter | Principal Harter |
 Fabrizio MioniRolf | Rolf |
 Ludwig StösselDr. Fritz Heine | Dr. Fritz Heine |
 Wolfe BarzellClown | Clown |
| IIna AndersGussie | Gussie |
| EEdit AngoldEmilie, Rath's Maid (uncredited) | Emilie, Rath's Maid (uncredited) |
 Gene RothDrunken Sea Captain (uncredited) | Drunken Sea Captain (uncredited) |
 Stella StevensChorus Girl (uncredited) | Chorus Girl (uncredited) |
 BarBara LunaChorus Girl (uncredited) | Chorus Girl (uncredited) |
| WWinona SmithSpecialty Dancer (uncredited) | Specialty Dancer (uncredited) |
 Cosmo SardoCustomer (uncredited) | Customer (uncredited) |
| CCarmen AustinChorus Girl (uncredited) | Chorus Girl (uncredited) |
 Brian AveryAnsbach, Student (uncredited) | Ansbach, Student (uncredited) |
 Al BainClub Patron (uncredited) | Club Patron (uncredited) |
| BBrandon BeachClub Patron (uncredited) | Club Patron (uncredited) |
 John BleiferBlue Angel Proprietor (uncredited) | Blue Angel Proprietor (uncredited) |
| IIlse BurkertChorus Girl (uncredited) | Chorus Girl (uncredited) |
| JJames J. CasinoClub Patron (uncredited) | Club Patron (uncredited) |
| BBud CokesStagehand (uncredited) | Stagehand (uncredited) |
| JJack DeeryClub Patron (uncredited) | Club Patron (uncredited) |
| VVoytek DolinskiMueller, Student (uncredited) | Mueller, Student (uncredited) |
| DDel EricksonLohmann, Student (uncredited) | Lohmann, Student (uncredited) |
 Franklyn FarnumBlue Angel Customer (uncredited) | Blue Angel Customer (uncredited) |
| GGerry GaylorWoman in the Shadows (uncredited) | Woman in the Shadows (uncredited) |
 John GeorgeClub Patron (uncredited) | Club Patron (uncredited) |
| LLars HensenClub Patron (uncredited) | Club Patron (uncredited) |
 Stuart HolmesClub Patron (uncredited) | Club Patron (uncredited) |
