The Royal Order of Isabella the Catholic (Spanish: Real Orden de Isabel la Católica; Abbr.: OYC) is a knighthood and one of the three preeminent orders of merit bestowed by the Kingdom of Spain, alongside the Order of Charles III (established in 1771) and the Order of Civil Merit (established in 1926). It recognizes extraordinary services to the homeland or the promotion of international relations and cooperation with other nations, with a particular focus on the territories of the former Spanish Empire. By law, its Grand Master is the King of Spain, and its Grand Chancellor is the Minister of Foreign Affairs. The Order is open to both Spaniards and foreigners, particularly from the Spanish-speaking world.
The Order was created in 1815 by King Ferdinand VII in honor of Queen Isabella I as the Real y Americana Orden de Isabel la Católica ("Royal and American Order of Isabella the Catholic") with the intent of "rewarding the firm allegiance to Spain and the merits of Spanish citizens and foreigners in good standing with the Nation and especially in those exceptional services provided in pursuit of territories in America and overseas." The Order was reorganized by royal decree on 26 July 1847, with the name "Royal Order of Isabella the Catholic", reflecting the secession of the mainland possessions in the Americas after the Spanish American wars of independence.