Sir John Margetson, KCMG (born 9 October 1927) is a former British Ambassador to Vietnam, the United Nations, and the Netherlands.
John William Denys Margetson was born 9 October 1927 and is the younger son of the late Very Rev W.J.Margetson and Marion Jenoure. He was educated at Blundell's School and St John's College, Cambridge. From 1947- 49 Margetson served his National Service with the Life Guards regiment of the Household Cavalry.
Following his retirement from the Foreign Office Margetson served as Gentleman Usher of the Blue Rod from 24 July 1992 – 25 October 2002.
- The London Gazette
- MARGETSON, Sir John (William Denys). Who's Who 2008 (A & C Black). 2008. Retrieved 11 October 2008.
- Unpublished memoirs and copies of draft speeches, Bodleian Library, Oxford
Sir John Moreton
|Gentleman Usher of the Blue Rod
Sir Anthony Figgis