Colonel Sir Tatton Benvenuto Mark Sykes, 6th Baronet (16 March 1879 – 16 February 1919) was an English traveller, Conservative Party politician, and diplomatic advisor, particularly with regard to the Middle East at the time of the First World War. He is associated with the Sykes–Picot Agreement, drawn up while the war was in progress regarding the partitioning of the Ottoman Empire by Britain, France and Russia, and was a key negotiator of the Balfour Declaration. Although a great supporter of Zionism during the First World War, his views changed in the year prior to his death.