Donald Charles "D. C." Riddy CBE (10 September 1907 – 20 November 1979) was a British linguist and educationalist. After World War II he was British Controller-General of the Education Branch, Control Commission for German - British Element, tasked with assisting the de-nazification of Germany through a process of re-education. He was later co-ordinator of the Council of Europe Modern Languages Programme and, for most of his career, Her Majesty’s Chief Inspector of Modern Languages in Schools. He was described as a man of ‘wide administrative experience and enormous energy, for whom material difficulties were a challenge which he met with enthusiasm’.