Berthold Alfred Maria Schenk Graf[A 1] von Stauffenberg (15 March 1905 – 10 August 1944) 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.

He and his brother Claus were introduced by Albrecht von Blumenthal to the circle of the mystic symbolist poet Stefan George, many of whose followers became members of the German Resistance to National Socialism.

Berthold's apartment at Tristanstraße in Berlin, where his brother Claus also lived for some time, was a meeting place for the 20 July conspirators, including their cousin Peter Yorck von Wartenburg.

As Claus had access to the inner circle around Hitler, he was assigned to plant a bomb at the Führer's briefing hut at the military high command in Rastenburg, East Prussia, on 20 July 1944.

[5]Berthold was tried in the Volksgerichtshof ("People's Court") by Roland Freisler on 10 August and was one of eight conspirators executed by strangulation, hanged in Plötzensee Prison, Berlin, later that day.