Saint Barthélemy, officially the Collectivité territoriale de Saint-Barthélemy, also known as St Barts or St. Barth, is an overseas collectivity of France in the Caribbean. The island lies about 30 kilometres southeast of the island of Saint Martin; it is northeast of the Dutch islands of Saba and Sint Eustatius, as well as north of the independent country of Saint Kitts a…Saint Barthélemy, officially the Collectivité territoriale de Saint-Barthélemy, also known as St Barts or St. Barth, is an overseas collectivity of France in the Caribbean. The island lies about 30 kilometres southeast of the island of Saint Martin; it is northeast of the Dutch islands of Saba and Sint Eustatius, as well as north of the independent country of Saint Kitts and Nevis.