Arthur Zimmermann (5 October 1864 – 6 June 1940) was State Secretary for Foreign Affairs of the German Empire from 22 November 1916 until his resignation on 6 August 1917. His name is associated with the Zimmermann Telegram during World War I. However, he was also closely involved in plans to support rebellions in Ireland and in India, and to assist the Bolsheviks to undermine Tsarist Russia.