Nero-Film AG was a German film production company founded in 1925 and based in Berlin during the Weimar era.
Under the influence of Nebenzahl's son Seymour Nebenzal, Nero-Film was one of the most artistically ambitious production companies in Germany, and with directors like G.W.
Pabst and Fritz Lang it produced a number of major films of the Weimar era, such as Pandora's Box, Westfront 1918, The Threepenny Opera, M, Kameradschaft, L'Atlantide and The Testament of Dr. Mabuse.
After the Nazi seizure of power in 1933, Seymour Nebenzal was forced to emigrate, and Nero-Film AG was put out of business.
Nebenzal, using his American passport, fled that evening to Switzerland and then to France, where he re-established his company as Production Nero Film and, among other French productions, collaborated with the Director Anatole Litvak to produce Mayerling, a huge success for the star, Charles Boyer.