Andrew Nicholas Duff OBE (born 25 December 1950) is a British politician who presided over the Union of European Federalists (UEF) from 2008 to 2013.

[3][4][5] Between October 2008 and November 2013 Andrew Duff was president of the Union of European Federalists (UEF).

On 15 September 2010 Duff together with UEF initiated the Spinelli Group, which was founded to reinvigorate the strive for federalisation of the European Union (EU).

Other prominent supporters are: Jacques Delors, Daniel Cohn-Bendit, Guy Verhofstadt, Elmar Brok.

At the 1992 general election he stood against the then-Prime Minister, John Major, in the Huntingdon constituency, coming in third place with 12% of the vote.