John Gilbert "Jack" Layton (July 18, 1950 – August 22, 2011) was a Canadian politician and Leader of the Official Opposition. He was leader of the New Democratic Party (NDP) from 2003 to 2011, and previously sat on Toronto City Council, occasionally holding the title of acting mayor or deputy mayor of Toronto during his tenure as city councillor. He was the Member of Parliament for Toronto—Danforth from 2004 until his death.
