Thomas Drew CMG (born 26 September 1970) is a British diplomat who is High Commissioner to Pakistan.
Drew attended Charterhouse and then Trinity College, Oxford where he read Classics, graduating in 1993. He worked for McKinsey & Company for two years before joining the Foreign and Commonwealth Office as a Second Secretary in 1995. After one two-year posting, he learnt Russian and was posted to Moscow in 1998 as a Second, and later a First Secretary.
In 2002 Drew returned to London to head a unit running the UK's engagement with the EU inter-governmental conference that led to the Treaty establishing a Constitution for Europe. Once the conference was held in 2004, he continued in the Foreign Office's EU Enlargement group until 2006, when he was posted as the Political Counsellor in Islamabad.
In 2008, Drew was appointed on loan to the Home Office as their Director of the Office for Security and Counter-Terrorism for three years. Drew returned to the Foreign Office in 2011 as Director of National Security, before replacing Lindsay Croisdale-Appleby as Principal Private Secretary to the Foreign Secretary in 2012. In 2014 he left this post, and in the Queen's Birthday Honours in 2015 he was appointed a Companion of the Order of St Michael and St George (CMG) "for services to British foreign policy interests." In 2015 he was a Visiting Fellow at the McKinsey Global Institute. He was appointed High Commissioner to the Islamic Republic of Pakistan from February 2016.