Major Sir Desmond Morton KCB CMG MC (13 November 1891 – 31 July 1971) was a British military officer and government official.
Morton played an important role in organizing opposition to appeasement of Germany under Adolf Hitler during the period prior to World War II by providing intelligence information about German re-armament to Winston Churchill.
Morton claimed that he had tacit approval by successive Prime Ministers, MacDonald, Baldwin and Chamberlain for this secret activity, but the evidence for this is unfounded because witness statements have not come forward.
Morton used to handle Ultra codes from Bletchley Park, as important messages were sent directly to the Prime Minister's Office.
Morton was portrayed by Moray Watson in the 1981 mini-series Winston Churchill: The Wilderness Years, and by Jim Broadbent in the 2002 film The Gathering Storm.