Sir Michael Justin Creswell KCMG (21 September 1909 - 25 April 1986) was a British diplomat. During World War II, he was an attaché at the British Embassy in Spain. He worked with the Comet Escape Line to help allied airmen who had been shot down over Nazi-occupied Europe to escape to neutral Spain and return to Britain. He was Ambassador to Finland from 1954 to 1958, Ambassador to Yugoslavia from 1960 to 1964, and Ambassador to Argentina from 1964 to 1969.