The David Davis by-election campaign of 2008 was a political campaign against the erosion of civil liberties in the United Kingdom, led by the former Conservative Member of Parliament (MP), David Davis, labelled by Davis as the David Davis For Freedom campaign.

Sir David Michael Davis is a British politician who served as Shadow Home Secretary from 2003 to 2008 and Secretary of State for Exiting the European Union from 2016 to 2018. A member of the Conservative Party, he has served as the Member of Parliament (MP) for Haltemprice and Howden, formerly Boothferry, since 1987. Davis was sworn of the Privy Council in the 1997 New Year Honours, having previously been Minister of State for Europe from 1994 to 1997.