Yves-François Blanchet (born April 16, 1965) is a Canadian politician. He is the leader of the Bloc Québécois since January 2019. He is the Member of parliament for the Quebec riding of Beloeil—Chambly. From 2008 to 2014, he was a member of the Quebec National Assembly.
He was first elected to the National Assembly in the 2008 Quebec general election. He represented the riding of Drummond.