Michael Grant Ignatieff,  (; born May 12, 1947) is a Canadian author, academic and former politician. He was the leader of the Liberal Party of Canada and Leader of the Official Opposition from 2008 until 2011. Known for his work as a historian, Ignatieff has held senior academic posts at the universities of Cambridge, Oxford, Harvard and Toronto. While living in the United Kingdom from 1978 to 2000, Ignatieff became well known as a television and radio broadcaster and as an editorial columnist for The Observer.

Ignatieff was born on May 12, 1947 in Toronto, the elder son of Russian-born Canadian Rhodes Scholar and diplomat George Ignatieff, and his Canadian-born wife, Jessie Alison (nee Grant). Ignatieff's family moved abroad regularly in his early childhood as his father rose in the diplomatic ranks. George Ignatieff was a diplomat and chief of staff to the prime minister under Lester Bowles Pearson. He also worked for Pearson's leadership campaigns.  At the age of 11, Ignatieff was sent back to Toronto to attend Upper Canada College as a boarder in 1959. At UCC, Ignatieff was elected a school prefect as Head of Wedd's House, was the captain of the varsity soccer team, and served as editor-in-chief of the school's yearbook. As well, Ignatieff volunteered for the Liberal Party during the 1965 federal election by canvassing the York South riding. He resumed his work for the Liberal Party in 1968, as a national youth organizer and party delegate for the Pierre Elliott Trudeau party leadership campaign.  After high school, Ignatieff studied history at the University of Toronto's Trinity College (B.A., 1969). There, he met fellow student Bob Rae, from University College, who was a debating opponent and fourth-year roommate. After completing his undergraduate degree, Ignatieff took up his studies at the University of Oxford, where he studied under, and was influenced by, the famous liberal philosopher Sir Isaiah Berlin, whom he would later write about. While an undergraduate at the University of Toronto, he was a part-time reporter for The Globe and Mail in 1964-65. In 1976, Ignatieff completed his PhD in History at Harvard University. He was granted a Cambridge M.A. by incorporation in 1978 on taking up a fellowship at King's College there.

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