Caroline St-Hilaire is a Canadian politician, who served as Mayor of Longueuil under the banner of Action Longueuil from November 10, 2009, to November 5, 2017. She was previously a Member of Parliament, representing the Bloc Québécois for the riding of Longueuil—Pierre-Boucher. In 2022, she ran as a Coalition Avenir Québec candidate in Sherbrooke for the provincial election, and lost to incumbent MNA Christine Labrie.