Berthold Alfred Maria Schenk Graf von Stauffenberg (15 March 1905, Stuttgart – 10 August 1944, Berlin-Plötzensee) was a German aristocrat and lawyer who was a key conspirator in the plot to assassinate Adolf Hitler on 20 July 1944, alongside his younger brother, Colonel Claus Schenk Graf von Stauffenberg. After the plot failed, Berthold was tried and executed by the Nazi regime.