Flight Lieutenant John William Morrison 2nd Viscount Dunrossil CMG JP (22 May 1926 – 22 March 2000) was a British diplomat. Lord Dunrossil was British High Commissioner to Fiji Nauru and Tuvalu and later to Barbados. His career reached its peak when he was appointed Governor and Commander-in-Chief of Bermuda in 1983. While in South Africa he supported Nelson Mandela during his imprisonment by helping him gain a law degree from the University of London.