- Heinz Rühmann
- Dr. Johannes Pfeiffer / Hans Pfeiffer
- Karin Himboldt
- Eva Knauer
- Hilde Sessak
- Marion
- Erich Ponto
- Professor Crey - called Schnauz
- Paul Henckels
- Professor Bömmel
- Hans Leibelt
- Gymnasialdirektor Knauer, called Zeus
- Lutz Götz
- Oberlehrer Dr. Brett
- Hans Richter
- Rosen
- Clemens Hasse
- Rudi Knebel
- Hedwig Wangel
- Haushälterin bei Crey
- Anneliese Würtz
- Frau Windscheidt
- Margarete Schön
- Frau Knauer
- Max Gülstorff
- Oberschulrat
- Egon Vogel
- Musiklehrer Fridolin
- Rudi Schippel
- Luck
- Ewald Wenck
- Kastellan Kliemke
- Albert Florath
- Old Man
- Karl Etlinger
- Member of Punchbowl group
- Georg H. Schnell
- Member of Punchbowl group
- Georg Vogelsang
- Member of Punchbowl group
- Erwin Biegel
- Minor Role
- Harald Föhr-Waldeck
- Primaner
- Maria Litto
- Minor Role
- Karl Platen
- Minor Role
- Giselle Vesco
- Evas Freundin
- Walter Werner
- Minor Role
