Karl Theodor Maria Georg Achaz Eberhardt Josef Freiherr von und zu Guttenberg (23 May 1921 – 4 October 1972) was a German politician of the Christian Social Union of Bavaria (CSU). He was parliamentary secretary of state in the Chancellor's Office in the government of Kurt Georg Kiesinger from 1967 until 1969, as well as the foreign policy spokesman of the CDU/CSU group in the Bundestag. Guttenberg was perceived as a hardline conservative anticommunist as well as a convinced proponent of European integration. His work was mostly within the field of foreign policy.