Trois Mares les Hauts is a commune located on the island of Réunion, an overseas department and region of France situated in the Indian Ocean. It is positioned in the southern part of the island, characterized by its diverse geographical landscape.
The area is known for its varied terrain, which includes both coastal elements and inland highlands. As a locality within Réunion, it serves as a residential and administrative point within the region's distinct maritime and volcanic environment.