Pierrefonds is a commune located in the southern part of Réunion, the French overseas region in the Indian Ocean. It is situated in the Réunion department and belongs to the administrative region of La Réunion.
The commune is part of Réunion's diverse landscape, which features volcanic terrain and coastal areas characteristic of the island. Like other communities in Réunion, Pierrefonds experiences a tropical climate and is subject to the geographical and climatic conditions that define the larger island territory.
As a French commune, Pierrefonds follows French administrative structures and regulations while maintaining its local identity as part of Réunion's multicultural society.