Willy Birgel
as Rudolf Diesel
Hilde Weissner
as Martha Diesel, seine Frau
Paul Wegener
as Direktor Buz
Josef Sieber
as Martin
Arthur Schröder
as Lucien Vogel
Erich Ponto
as Theodor Diesel
Hilde von Stolz
as Frau von Lorrenz
Hubert von Meyerinck
as Herr von Lorrenz
Werner Pledath
as Prof. Linde
Herbert Gernot
as Krumper
Walter Janssen
as Prof. Barnickel
Karl-Heinz Peters
as Ingenieur Scheuermann
