Friedrichstadt may refer to: Friedrichstadt, a town in Schleswig-Holstein Friedrichstadt (Amt), a collective municipality in Schleswig-Holstein Friedrichstadt (Berlin), a neighbourhood of Berlin Friedrichstadt (Dresden), a quarter of Dresden Düsseldorf-Friedrichstadt, a quarter of Düsseldorf Former name of the city of Jaunjelgava, Latvia Friedrichstadt, a former name (before 1918) for the district around Paechtown, South Australia