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 Saint Lucia? CastriesWhat is the Capital of Grenada? Saint George’sWhat is the Capital of Saint Vincent and the Grenadines? KingstownWhat is the Capital of Saint Kitts and Nevis? BasseterreWhat is the Capital of Antigua and Barbuda? Saint John’sReunion FactsReunion AirportsReunion Flag and MeaningSaint Lucia PopulationSaint Helena FactsSaint Lucia FactsEmbassies of Saint LuciaWhere is Saint Lucia Located?