Dietrich Klagges (German pronunciation: [ˈdiːtʁɪç ˈklaɡəs]) (1 February 1891 in Herringsen, now part of Bad Sassendorf – 12 November 1971 in Bad Harzburg) was a National Socialist politician and from 1933 to 1945 the appointed premier (Ministerpräsident) of the now abolished Free State of Brunswick. He also went by the pseudonym Rudolf Berg.