Rudolf Klein-Rogge as Dr. Mabuse

Aud Egede-Nissen as Cara Carozza

Gertrude Welcker as Countess Dusy Told

Alfred Abel as Count Told

Bernhard Goetzke as Prosecutor von Wenk

Paul Richter as Edgar Hull

Robert Forster-Larrinaga as Spoerri

Hans Adalbert Schlettow as Georg

Georg John as Pesch

Károly Huszár as Hawasch

Grete Berger as Fine, a servant

Julius Falkenstein as Karsten

Lydia Potechina as The Russian

Julius E. Herrmann as Emil Schramm

Julietta Brandt as

Max Adalbert as (uncredited)

Anita Berber as Dancer in tailcoat (uncredited)

Paul Biensfeldt as Man who gets the gun (uncredited)

Gustav Botz as (uncredited)

Lil Dagover as (uncredited)

Heinrich Gotho as (uncredited)

Leonhard Haskel as (uncredited)

Erner Huebsch as (uncredited)

Gottfried Huppertz as (uncredited)

Hans Junkermann as (uncredited)

Adolf Klein as (uncredited)

Erich Pabst as (uncredited)

Edgar Pauly as Big Spectator (uncredited)

Karl Platen as Tolds' servant (uncredited)

Auguste Prasch-Grevenberg as (uncredited)

Adele Sandrock as (uncredited)

Willy Schmidt-Gentner as (uncredited)

Hans Sternberg as (uncredited)

Olaf Storm as (uncredited)

Oscar Stribolt as Enthusiastic Volunteer at Magic Show (uncredited)

Erich Walter as (uncredited)