Willi Winzig / Otto Winzig
Felix Klein
Annie Engel
Frau Rosine Stirnima
Staatssekretär Kuhländer
Helga Winzig
Motzmann
Dr. Senn
Dr. Finz
Dr. Sigrid Kubin
Fridolin
Fräulein Grauvogel
Singers
Frank 'Frankie' Kuhländer
Portier (uncredited)
Krankenschwester (uncredited)
Frau in Nachtlokal (uncredited)
Professor Klappmüller (uncredited)
Fensterputzer (uncredited)
Aga Ben Nemzich (uncredited)
Lebedame (uncredited)