Der Musterknabe

Peter Alexander

as Dr. Fritz Geyer

Cornelia Froboess

as Reny Pacher

Gunther Philipp

as Dr. Erwin Berthold

Gusti Wolf

as Frl. Puppernick, Sekretärin

Wolfgang Jansen

as Benno Geyer

Rudolf Carl

as Erich Pacher

Elisabeth Epp

as Mathilde Pacher

Joseph Egger

as Dienstmann

Adrienne Gessner

as Elisabeth Geyer

Franz Stoß

as Prof. Kramm

Otto Loewe

as Dr. Oberwasser

Edith Steinacher

as Uschi, Bennos Freundin

Franz Elkins

as Pepi, ein Lausbub

Theo Lingen

as Prof. Dr. Liebreich

Rosl Dorena

as Anna, Haushälterin

Peter Frick

as Ewald Adler

Heidi Grübl

as Gussy

Walter Lehr

as Schutzmann

Peter Machac

as Sterzenbach

Raoul Retzer

as Werkmeister Anton

Anni Schönhuber

as Aufräumefreu