The Spratly Islands are a group of more than 750 reefs, islets, atolls, cays and islands in the South China Sea. The archipelago lies off the coasts of the Philippines and Malaysia (Sabah), about one third of the way to southern Vietnam. They comprise less than four square kilometers of land area spread over more than 425,000 square kilometers of sea. The Spratlys are one of three archipelagos of the South China Sea which comprise more than 30,000 islands and reefs and which complicate governance and economics in that region of Southeast Asia.

Such small and remote islands have little economic value in themselves, but are important in establishing international boundaries. There are no native islanders but there are rich fishing grounds and initial surveys indicate the islands may contain significant reserves of oil and natural gas.

About 45 islands are occupied by relatively small numbers of military forces from Vietnam, the People's Republic of China, the Republic of China (Taiwan), Malaysia and the Philippines. Brunei has also claimed an Exclusive Economic Zone (EEZ) in the southeastern part of the Spratlys encompassing just one area of small islands above mean high water (on Louisa Reef.)