Sir Charles Kingsley Webster (1886–1961) was a British diplomat and historian. He graduated from the University of Cambridge and began his teaching career as a professor at Harvard, Oxford, and the London School of Economics. From 1950 to 1954, he served as president of the British Academy. He was vice president of the International Committee of Historical Sciences. In 1960, he was elected a foreign member of the French Academy of Moral and Political Sciences. He authored a number of works on British foreign policy during the first half of the 19th century. In addition to his academic career, Webster was also actively involved in the British Foreign Office. From 1910 to 1920, he served as an advisor to the British delegation at the Paris Peace Conference. During World War II, he carried out diplomatic missions in the United States and played an active role in the establishment of the United Nations.