Kralendijk is the capital city and main port of the island of Bonaire in the Caribbean Netherlands. The language spoken in the town is Papiamentu, but Dutch and English are widely used. In Dutch, Kralendijk means "coral reef" or "coral dike". The Papiamentu name for the town is Playa or "beach". As of 2006^[update], the town had a population of 3,061.

Off the coast of Kralendijk lies the uninhabited island of Klein Bonaire, a diving and snorkeling paradise. This small island can be reached by water taxi, or, for divers, by practically all of the local dive operators.

Fort Oranje was built in 1639 to defend Bonaire's main harbor. The fort was extensively modified during the end of the seventeenth century. The English settlement of "Playa" was established adjacent to the fort in 1810. The town was renamed "Kralendijk" by the Dutch colonial rulers in about 1840.

On May 10, 1940, 461 Dutch and German citizens were transported to Bonaire and interned in a camp just south of the fort. After World War II, this camp was converted into a hotel, which is now the Divi Bonaire.