Marc G. Serré MP (born January 28, 1967) is a Canadian Liberal politician, who was elected to represent the riding of Nickel Belt in the House of Commons of Canada in the 2015 federal election. He is the son of Gaetan Serré, who represented Nickel Belt from 1968 to 1972 under the government of Pierre Trudeau, and the nephew of another former Liberal Member of Parliament Benoît Serré.