Sainte-Marie is a commune in the French overseas department of Réunion. It is located on the north side of the island of Réunion, just east of, and adjacent to, the capital of Saint-Denis.

Réunion, officially Department of Réunion, is an island in the Indian Ocean that is an overseas department and region of France. Part of the Mascarene Islands, it is located approximately 679 km (422 mi) east of the island of Madagascar and 175 km (109 mi) southwest of the island of Mauritius. As of January 2024, it had a population of 885,700. Its capital and largest city is Saint-Denis.