 | Gustav Fröhlich als Freder Fredersen |
 | Brigitte Helm als Maria / The Machine Man |
 | Alfred Abel als Johann 'Joh' Fredersen |
 | Rudolf Klein-Rogge als C.A. Rotwang |
 | Theodor Loos als Josaphat |
 | Fritz Rasp als The Thin Man |
 | Erwin Biswanger als No. 11811 - Georgy |
 | Heinrich George als Grot |
 | Fritz Alberti als Creative Human - Man Who Convinces Babel (uncredited) |
 | Grete Berger als Working Woman (uncredited) |
| Olly Boeheim als Working Woman (uncredited) |
| Heinrich Gotho als Master of Ceremonies (uncredited) |
| Gottfried Huppertz als Man Playing Violin (uncredited) |
 | Georg John als Working Man Who Causes Explosion of M-Machine (uncredited) |
 | Margarete Lanner als Woman of Eternal Gardens / Lady in Car (uncredited) |
| Rose Lichtenstein als Working Woman (uncredited) |
| Hanns Leo Reich als Marinus (uncredited) |
| Arthur Reinhardt als Working Man (uncredited) |
 | Curt Siodmak als Working Man (uncredited) |
| Henrietta Siodmak als Working Woman (uncredited) |
 | Olaf Storm als Jan (uncredited) |
 | Rolf von Goth als Son in Eternal Gardens (uncredited) |
| Helen von Münchofen als Woman of Eternal Gardens (uncredited) |
| Helene Weigel als Working Woman (uncredited) |
| Thea von Harbou | Screenplay |
| Aenne Willkomm | Costume Design |
| Fritz Lang | Director |
| Erich Pommer | Producer |
| Fritz Lang | Editor |
| Günther Rittau | Director of Photography |
| Karl Freund | Director of Photography |
| Walter Ruttmann | Director of Photography |
| Gottfried Huppertz | Original Music Composer |
| Edgar G. Ulmer | Set Designer |
| Fritz Lang | Screenplay |
| Karl Vollbrecht | Art Direction |
| Erich Kettelhut | Art Direction |
| Otto Hunte | Art Direction |
| Horst von Harbou | Still Photographer |
| Ernst Kunstmann | Special Effects |
| Eugen Schüfftan | Visual Effects |
| Frank Strobel | Music Editor |
| Robert Baberske | First Assistant Camera |
| Konstantin Irmen-Tschet | Special Effects |
| Walter Schulze-Mittendorff | Sculptor |
| Thea von Harbou | Novel |
| Karl Freund | Camera Operator |
| Slatan Dudow | Assistant Director |
| Günther Rittau | Camera Operator |
| Karl Vollbrecht | Set Designer |
| Rudi George | Production Artist |
| Otto Harzner | Original Music Composer |
| Erich Kettelhut | Production Office Assistant |
| Otto Hunte | Set Designer |
| Hans Taussig | Production Office Assistant |
| Erich Kettelhut | Set Designer |
| Frank Strobel | Conductor |
| Erich Holder | Production Office Assistant |
| Robert Baberske | Assistant Camera |
