Saint-Quentin is a town in northern New Brunswick, Canada. Saint-Quentin is in the Restigouche region of the Appalachian Mountains, 50 kilometres west of Mount Carleton, the province's highest elevation. The great majority of individuals in the area speak French. On 1 January 2023, Saint-Quentin annexed the local service district of St. Martin de Restigouche and part of the LSD of the parish of Saint-Quentin Revised census figures have not been released.