Reunion or The Reunion or La Réunion may refer to:


Old World

• Réunion, a French overseas department on the eponymous island in the Indian Ocean
• Roman Catholic Diocese of Saint-Denis-de-La Réunion, for the whole island
• La Réunion, Lot-et-Garonne, a town in southwestern France

Réunion (, ; previously Île Bourbon) is an insular region of France located in the Indian Ocean. It is situated east of Madagascar and about southwest of Mauritius, the nearest island. As of 2014, its population numbered 844,994 inhabitants.