Andrew Turnbull, Baron Turnbull, (born 21 January 1945) was the head of Her Majesty's Civil Service and Cabinet Secretary between 2002 and 2005 when he was succeeded by Sir Gus O'Donnell.
He now sits in the House of Lords as a crossbencher.
He was educated at Enfield Grammar School and Christ's College, Cambridge, where he studied Economics.He serves on the Dulwich College Board of Governors, and has been its chairman since 2009.
Since 2006 he has chaired the international development charity, Zambia Orphans Aid UK.