Xavier Barsalou-Duval MP (born November 10, 1988) is a Canadian politician who was elected to represent the riding of Pierre-Boucher—Les Patriotes—Verchères in the House of Commons in the 2015 federal election.

[2] He was president of the Forum jeunesse du Bloc Québécois from 2011 to 2015 and campaigned for Mario Beaulieu in the 2014 leadership race.

[3][4] He was elected with the lowest percentage of the vote of any Member of Parliament in 2015, gaining only 28.6% of the vote due to vote splitting and a close race in his riding.

Barsalou-Duval was one of three Bloc MPs who supported Martine Ouellet's leadership during a caucus revolt and remained with the Bloc caucus when seven MPs resigned on February 28, 2018 to sit as Independents.

[5] Since 2021 he has served as the critic of transport, infrastructure and communities in the Bloc Québécois Shadow Cabinet.