Sir David Alan Walker (born 31 December 1939) is a British banker and former chairman of Barclays.
He was chairman of Morgan Stanley International from 1995 to 2001, and 2004 to 2005, and remains a senior advisor.
Walker was previously Assistant Secretary at the Treasury (1974β77), chairman of the Securities and Investments Board (1988β92), executive director for finance and industry at the Bank of England (1989β95) and deputy chairman of Lloyds TSB (1992β94).
In 1994 he also joined the Washington-based financial advisory body, the Group of Thirty.
In 2007, Walker was commissioned by the UK private equity industry to produce guidelines for disclosure and transparency in private equity.
On 9 February 2009, he was appointed to lead a government enquiry into banks' corporate governance; the appointment was criticised.
On 9 August 2012 he was appointed Chairman of Barclays effective 1 November.On 1 July 2015, Sir David Walker was appointed to global investment manager, Winton Capital Group, as its non-executive Chairman to support the Groupβs ambition of becoming a global institutional asset-management group.