Otto Hartmann was an Austrian actor and Gestapo informer.
Filmography
Suburban Cabaret
as Leutnant von Daffinger
Burg Theatre
as vorsprechender Schauspieler
Singende Jugend
as Schmidt, Kapellmeister
Bright Eyes
as Marcel
Der weiße Traum
as Poldi
The Case of Colonel Redl
as Stephan Dolan, Ulanenleutnant
Vater Radetzky
as Lorenz Hauser
Madame Bluebeard
as Baron Terhausen
The Vagrant
as Provisor
Die Jugend am Scheideweg
as Hans