Werner Krauß
— Dr. Caligari
Conrad Veidt
— Cesare
Friedrich Fehér
— Francis
Lil Dagover
— Jane
Hans Heinrich von Twardowski
— Alan
Rudolf Lettinger
— Dr. Olsen
Henri Peters-Arnolds
— Young Doctor (uncredited)
Rudolf Klein-Rogge
— Criminal (uncredited)
Hans Lanser-Rudolf
— Old Man (uncredited)
Ludwig Rex
— Murderer (uncredited)
Elsa Wagner
— Landlady (uncredited)