La Croix-Valmer is a commune in the Var department in the Provence-Alpes-Côte d'Azur region in southeastern France. La Croix-Valmer is …La Croix-Valmer is a commune in the Var department in the Provence-Alpes-Côte d'Azur region in southeastern France. La Croix-Valmer is at the foot of the Massif des Maures hills in the Bay of Cavalaire-sur-Mer, halfway between Le Lavandou and Saint-Tropez.