Guy Caron (born May 13, 1968) is a Canadian politician, who was elected the mayor of Rimouski, Quebec in the 2021 Quebec municipal elections. He was previously a member of the House of Commons of Canada from 2011 to 2019, and served as the federal House leader of the New Democratic Party from 2017 to 2019, substituting for party leader Jagmeet Singh who during this time did not hold a seat.