The Spanish royal family, a branch of the House of Bourbon, is headed by King Felipe VI, and currently consists of Queen Letizia, their children Leonor, Princess of Asturias and Infanta Sofía of Spain, and Felipe's parents, King Juan Carlos I and Queen Sofía. The royal family lives at the Zarzuela Palace in Madrid, although their official residence is the Royal Palace of Madrid. The membership of the royal family is defined by royal decree and consists of: the King of Spain, the monarch's spouse, the monarch's parents, his children, and the heir to the Spanish throne.

The House of Bourbon is a dynasty that originated in the Kingdom of France as a branch of the Capetian dynasty, the royal House of France. Bourbon kings first ruled France and Navarre in the 16th century. A branch descended from the French Bourbons came to rule Spain in the 18th century and is the current Spanish royal family. Further branches, descended from the Spanish Bourbons, held thrones in Naples, Sicily, and Parma. Today, Spain and Luxembourg have monarchs of the House of Bourbon. The royal Bourbons originated in 1272, when Robert, the youngest son of King Louis IX of France, married the heiress of the lordship of Bourbon. The house continued for three centuries as a cadet branch, serving as nobles under the direct Capetian and Valois kings.