Lothar Mendes was a German-born screenwriter and film director. His two best known films are Jew Süss (1934) and The Man Who Could Work Miracles (1936), both productions for British studios.

Jew Süss is a 1934 British historical romantic drama film based on Lion Feuchtwanger's 1925 novel Jud Süß, about Joseph Süß Oppenheimer. Directed by Lothar Mendes, the film stars German actor Conrad Veidt in the role of Oppenheimer. The screenplay was written by Dorothy Farnum and Arthur Rawlinson.