Friedrich of Germany or Frederick of Germany may refer to:
Frederick I, Holy Roman Emperor (1122–1190), or Frederick I Barbarossa, king of Germany Frederick II, Holy Roman Emperor, (1194–1250), king of Jerusalem and Sicily Frederick the Fair (1289–1330), or Frederick I of Austria and Frederick III of Germany Frederick III, Holy Roman Emperor (1415–1493), king of Germany Frederick III, German Emperor, (1831–1888), German emperor, king of Prussia