Neither. The island is uniquely divided between two European nations: France and the Netherlands. The northern half, Saint-Martin, is an overseas collectivity of France, making it part of the European Union (though not the Schengen Area). The southern half, Sint Maarten, is an autonomous country within the Kingdom of the Netherlands. It is frequently confused with the U.S. Virgin Islands or British Virgin Islands because English is the most widely spoken language and the U.S. Dollar is the primary currency used by tourists. In 2026, this dual-nationality status remains a major draw for travelers who can experience "two countries for the price of one." There is no hard border between the two sides, allowing for free movement, though the French side maintains a more "European" feel with its boutiques and cafes, while the Dutch side is known for its vibrant nightlife, casinos, and the famous Maho Beach.