Sir John Douglas Kelso Grant KCMG (born 17 October 1954) is a retired British diplomat whose last diplomatic post was Permanent Representative of the United Kingdom to the European Union between 2003 and 2007.
Grant was born in Singapore and educated at the Edinburgh Academy and St Catharine's College, Cambridge, where he read French and German.
Grant was then appointed UK Permanent Representative to the European Union.
He chaired the Committee of Permanent Representatives (COREPER) during Britain's presidency of the EU in 2005.
After leaving the Foreign Office in 2007 Grant worked for BHP Billiton in London from 2007 to 2009, was executive vice-president, policy and corporate affairs, at BG Group from 2009 to 2015, and vice-president, international government relations, Anadarko Petroleum Corporation from 2015 to 2019.