Saint-Vallier may refer to:
Places France Saint-Vallier, Charente, in the Charente département Saint-Vallier, Drôme, in the Drôme département Saint-Vallier, Saône-et-Loire, in the Saône-et-Loire département Saint-Vallier, Vosges, in the Vosges département Saint-Vallier-de-Thiey, in the Alpes-Maritimes département Saint-Vallier-sur-Marne, in the Haute-Marne département
Quebec Saint-Vallier, Quebec, a municipality in Bellechasse Regional County Municipality
People Valère de Langres (died 411), Christian saint also known as Vallier de Langres Jean-Baptiste de La Croix de Chevrières de Saint-Vallier (1653–1727), second bishop of Quebec