Henry McMahon (diplomat)

Lieutenant Colonel Sir Henry McMahon GCMG GCVO KCIE CSI KStJ
Painting of Henry McMahon by John Collier
Personal details
Born	28 November 1862 Simla, Punjab, British India
Died	29 December 1949 (1949-12-30) (aged 87) London, UK
Occupation	Diplomat, commissioner
Known for	McMahon-Hussein Correspondence, the McMahon Line, Declaration to the Seven

Lieutenant Colonel Sir Arthur Henry McMahon GCMG GCVO KCIE CSI KStJ (28 November 1862 – 29 December 1949), was a British Indian Army officer and diplomat who served as the High Commissioner in Egypt from 1915 to 1917. He was also an administrator in the British Raj and served twice as Chief Commissioner of Balochistan. McMahon is best known for the McMahon-Hussein Correspondence with Hussein bin Ali, Sharif of Mecca, the McMahon Line between Tibet and India and the Declaration to the Seven in response to a memorandum written by seven notable Syrians. After the Sykes-Picot Agreement was published by the Bolshevik Russian government in November 1917, McMahon resigned. He also features prominently in T.E. Lawrence's account of his role in the Arab Revolt against the Ottoman Empire during World War I, Seven Pillars of Wisdom.