Brian William Haw (7 January 1949 – 18 June 2011) was an English protester and peace campaigner who lived for almost ten years in a peace camp in London's Parliament Square from 2001, in a protest against UK and US foreign policy.
He began the Parliament Square Peace Campaign before the 2001 United States attacks, and became a symbol of the anti-war movement over the policies of both the United Kingdom and the United States in Afghanistan and later Iraq.
At the 2007 Channel 4 Political Awards he was voted Most Inspiring Political Figure.
Haw died of cancer in Berlin, where he had been receiving medical treatment.