What is the Capital of Réunion? Saint-Denis Saint-Denis is the capital of the French island of Réunion in the Indian Ocean, and has 133,700 residents (2004). Read more:What is the Capital of Grenada? Saint George’sWhat is the Capital of Saint Lucia? CastriesWhat is the Capital of Saint Kitts and Nevis? BasseterreWhat is the Capital of Antigua and Barbuda? Saint John’sWhat is the Capital of Saint Vincent and the Grenadines? KingstownReunion AirportsReunion FactsReunion Flag and MeaningWhere is Saint Lucia Located?Saint Helena FactsSaint Lucia PopulationEmbassies of Saint KittsSaint Lucia Holidays