Alexandre Boulerice is a Canadian politician who has represented the riding of Rosemont—La Petite-Patrie in the House of Commons of Canada as a member of the New Democratic Party (NDP) since the 2011 election. He is currently the NDP's Quebec lieutenant and ethics critic. Boulerice was appointed as the Deputy Leader of the New Democratic Party on March 11, 2019, by party leader Jagmeet Singh. As of the 2019 federal election, Boulerice is the only NDP MP from Quebec and since the 2021 federal election, he is the only NDP MP from any province east of Ontario.

The New Democratic Party is a federal political party in Canada. Widely described as social democratic, the party occupies the centre-left of the political spectrum, with the party generally sitting to the left of the Liberal Party. The party was founded in 1961 by the Co-operative Commonwealth Federation (CCF) and the Canadian Labour Congress (CLC).