Saint Martin is an island in the northeast Caribbean, approximately 300 km east of Puerto Rico. The 87 km2 island is divided roughly 60/40 between France and the Kingdom of the Netherlands ; however, the Dutch side has the larger population. It is one of the smallest sea islands divided between two nations, a division dating to 1648. The southern Dutch part comprises Sint Maarten and is one of four constituent countries that form the Kingdom of the Netherlands. The northern French part comprises the Collectivité de Saint-Martin and is an overseas collectivity of France. Wikipedia
Saint Martin is technically half Dutch and half French. We haven't bothered to distinguish between the two on this website.