The Royal Spanish Academy (Spanish: Real Academia Española, RAE) is the official royal institution responsible for regulating the Spanish language. It is based in Madrid, Spain, but is affiliated with national language academies in twenty-one other hispanophone (Spanish-speaking) nations through the Association of Spanish Language Academies. The RAE's emblem is a fiery crucible, and its motto is "Limpia, fija y da esplendor" ("[It] cleans, sets, and casts splendour").

The RAE dedicates itself to the linguistic planning by enacting legislation aimed at promoting linguistic unity within and between the various territories, to ensure a common standard in accordance with its founding charter: "To ensure the changes that that it undergoes [...] do not break the essential unity that maintains the entire Hispanic sphere."

The proposed language guidelines are shown in a number of various works. The priorities are the dictionary (DRAE), edited periodically twenty-two times since 1780 until today, and grammar, edited in December of 2009.