Siegfried Alfred Rudolf Friedrich von Kardorff (4 February 1873 in Berlin − 12 October 1945 in Berlin) was a German politician.
He was born the son of Wilhelm von Kardorff and followed him in adopting a career in politics. Describing himself as a "left-wing Free Conservative",[1] Kardoff was from 1910 to 1918 member of Prussian House of Representatives. Kardorff helped found the German National People's Party.[2] At one of its first public meetings in December 1918, Kardorff was the main speaker. He declared: "Our new party, in which friendly right-wing parties have united, has no past and rejects any responsibility for the past. We have a present and, if God will, a good future".[3] Kardorff said that the party would uphold the monarchy, agriculture, the middle class and the church: "But we are not a party of Lutheran orthodoxy, rather we find recognition wherever living Christianity is found".[4]
Kardorff later joined the German People's Party and was a member of its "industrial right-wing" according to the historian Stephen G. Fritz.[5] From 1920 to 1932 he was member of German Reichstag.
He also composed political biographies of Otto von Bismarck and his father; the latter was praised by G. P. Gooch,[6] Carlton J. H. Hayes[7] and Sidney B. Fay.[8]