List of titles and honours of the Spanish Crown

The current Spanish constitution refers to the monarchy as "the Crown of Spain" and the constitutional title of the monarch is simply rey/reina de España: that is, "king/queen of Spain". However, the constitution allows for the use of other historic titles pertaining to the Spanish monarchy, without specifying them. A decree promulgated 6 November 1987 at the Council of Ministers regulates the titles further, and on that basis the monarch of Spain has a right to use ("may use") those other titles appertaining to the Crown. Contrary to some belief, the long titulary that contains the list of over 20 kingdoms is not in state use, nor is it used in Spanish diplomacy. In fact, it has never been in use in that form, as "Spain" was never a part of the list in pre-1837 era when the long list was officially used.

Spain, mentioned differently in the titulary depending on which monarch was reigning, was for more than three centuries also symbolized by the long list that started "...of Castile, Leon, Aragon,..." - The following long titulary in the feudal style was the last used officially in 1836 by Isabella II of Spain (see the account of titulary in her article) before she became constitutional queen.

The first king to officially use a derivation of the name "Spain" as the realm in the titulary was Charles I of Spain, who used "Rex Hispaniarum et Indiarum"(i.e., King of the Spains and Indies). This title was often used after his title of "Holy Roman Emperor," as "Emperor" was considered a superior title to "King." During his brief and controversial occupancy of the throne Joseph Napoleon Bonaparte, brother of Emperor Napoleon, also used a similar title, King of the Spains and the Indies.

During the first restoration of the historic dynasty, it returned to the traditional format (...of Castile, Leon, Aragon,...) until 1837, when the short version "queen of the Spains" was taken into use by Isabella II. The singular Spain was first used by Amadeo — he was "by divine grace and will of nation, king of Spain." During the second restoration, King Alfonso XII started to use "constitutional king of Spain, by divine and constitutional grace".

With the third restoration of the royal house of Spain, still current as of June 2014^[update], the monarch uses the simple title "king of Spain", without any divine, national or constitutional reference.

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