Erich Karl Heinrich Kettelhut (1 November 1893 – 13 March 1979) was a German production designer, art director and set decorator. Kettelhut is considered as one of the most important artists in the history of early German cinema, mainly for his set direction for Die Nibelungen (1924) and his design and visual effects for Metropolis (1927). His early career was defined by a working relationship with fellow designers Otto Hunte and Karl Vollbrecht, the trio working on many of Fritz Lang's early German films. Despite being best known for his iconic visuals on several of the most important films of German Expressionist cinema, he is also noted for a career spanning into the 1960s and his work on more light-hearted films and musicals.