Saint-Pierre-d'Entremont () is a commune in the Orne department in north-western France.
The commune is made up of the following collection of villages and hamlets, La Londe, Couhan, Le Haut Bocq, Le Bas Bocq, Saint-Pierre-d'Entremont, Launée, Entremont and Noirée.
The river Noireau flows through the commune.
The commune is on the border of the area known as Suisse Normande.