Saint Martin (French: Saint-Martin; Dutch: Sint Maarten) is an island in the northeast Caribbean, approximately 300 km (190 mi) east of Puerto Rico. The 87-square-kilometre (34 sq mi) island is divided roughly 60:40 between the French Republic (53 km2 or 20 sq mi) and the Kingdom of the Netherlands (34 km2 or 13 sq mi), but the Dutch part is more populated than the French part. The division dates to 1648. The northern French part comprises the Collectivity of Saint Martin and is an overseas collectivity of the French Republic. The southern Dutch part comprises Sint Maarten and is one of four constituent countries that form the Kingdom of the Netherlands. Even though the island is an overseas possession of two European Union member states, only the French part of the island is part of the EU.
It is commonly believed that Christopher Columbus named the island in honour of Saint Martin of Tours when he encountered it on his second voyage of discovery. However, he actually applied the name to the island now called Nevis when he anchored offshore on 11 November 1493, the feast day of Saint Martin. The confusion of numerous poorly charted small islands in the Leeward Islands meant that this name was accidentally transferred to the island now known as Saint-Martin/Sint Maarten.