Gustav Fröhlich as Freder Fredersen

Brigitte Helm as Maria / The Machine Man

Alfred Abel as Johann 'Joh' Fredersen

Rudolf Klein-Rogge as C.A. Rotwang

Theodor Loos as Josaphat

Fritz Rasp as The Thin Man

Erwin Biswanger as No. 11811 - Georgy

Heinrich George as Grot

Fritz Alberti as Creative Human - Man Who Convinces Babel (uncredited)

Grete Berger as Working Woman (uncredited)

Olly Boeheim as Working Woman (uncredited)

Heinrich Gotho as Master of Ceremonies (uncredited)

Gottfried Huppertz as Man Playing Violin (uncredited)

Georg John as Working Man Who Causes Explosion of M-Machine (uncredited)

Margarete Lanner as Woman of Eternal Gardens / Lady in Car (uncredited)

Rose Lichtenstein as Working Woman (uncredited)

Hanns Leo Reich as Marinus (uncredited)

Arthur Reinhardt as Working Man (uncredited)

Curt Siodmak as Working Man (uncredited)

Henrietta Siodmak as Working Woman (uncredited)

Olaf Storm as Jan (uncredited)

Rolf von Goth as Son in Eternal Gardens (uncredited)

Helen von Münchofen as Woman of Eternal Gardens (uncredited)

Helene Weigel as Working Woman (uncredited)