Karl Ernst Thomas de Maizière (German pronunciation: [də mɛˈzi̯ɛːɐ̯]; born 21 January 1954) is a German politician of the Christian Democratic Union (CDU) who served as Federal Minister of the Interior from 2009 to 2011 and 2013 to 2018, as well as Federal Minister of Defence from 2011 to 2013. He previously served as Head of the Chancellery and Federal Minister for Special Affairs in the First Merkel cabinet from 2005 to 2009. Since 2009, he has been a member of the Bundestag for Meißen.