Pierrefitte-sur-Seine is a former commune located in the Seine-Saint-Denis department within the Île-de-France region of France. Situated in the northern suburbs of Paris, it lies approximately 12.4 km (7.7 mi) from the center of the French capital.
As of January 2025, Pierrefitte-sur-Seine is no longer an independent commune and has become part of Saint-Denis. This transition followed a vote by both municipal councils on May 30, 2024.