Trenche may refer to:
Canada Lac de la Trenche, in La Tuque (urban agglomeration), Mauricie, Québec River Trenche, a tributary of the Saint-Maurice River, Québec Central Trenche, an hydroelectric dam located on the Saint-Maurice River in La Tuque, in Upper-Mauricie, Québec Lac de la Trenche, in La Tuque, Mauricie, Québec Lake Trenche (Lac-Ashuapmushuan), Lac-Ashuapmushuan, Le Domaine-du-Roy Regional County Municipality, Québec
France La Tranche-sur-Mer, a seaside resort in southern Vendée, near La Rochelle region of Pays de la Loire
See also Tranche