Sir Edward Douglas Maclagan KCSI KCIE (25 August 1864 – 22 October 1952) was an administrator in British India. He was born in the Punjab, the son of General Maclagan of the Royal Engineers and educated at Winchester College and New College, Oxford. In 1883 he passed the Indian Civil Service Examination. He returned to England in 1924 and occupied himself in writing The Jesuits and the Great Mogul. From 1925 to 1928 and from 1931 to 1934 he acted as President of the Royal Asiatic Society of Great Britain and Ireland.