The Porte Saint-Denis is a monument situated in the 10th arrondissement of Paris, France. It stands at the intersection where the Rue Saint-Denis meets the Rue du Faubourg Saint-Denis, adjacent to the Boulevard de Bonne-Nouvelle and the Boulevard Saint-Denis.
The structure is located at the site of one of the original gates of the Wall of Charles V, which served as one of the former city walls of Paris.