Michel Gauthier was a Canadian politician, who served as leader of the Bloc Québécois from 1996 to 1997. As the party was the Official Opposition in the Parliament of Canada, Gauthier was also the Leader of the Opposition during this time. He later recanted his sovereignist views when he joined the Conservative Party two years before his death.

The Bloc Québécois is a federal political party in Canada devoted to Quebec nationalism and the promotion of Quebec sovereignty. The Bloc was formed by Members of Parliament (MPs) who defected from the federal Progressive Conservative Party and Liberal Party during the collapse of the Meech Lake Accord. Founder Lucien Bouchard had been a cabinet minister in the federal Progressive Conservative government of Brian Mulroney.