The Political Constitution of the Spanish Monarchy (Spanish: Constitucin Poltica de la Monarqua Espaola), also known as the Constitution of Cdiz (Spanish: Constitucin de Cdiz) and as La Pepa, was the first Constitution of Spain and one of the earliest codified constitutions in world history. The Constitution was ratified on 19 March 1812 by the Cortes of Cdiz, the first Spanish legislature that included delegates from the entire nation, including Spanish America and the Philippines. "It defined Spanish and Spanish American liberalism for the early 19th century."With the notable exception of proclaiming Roman Catholicism as the official and sole legal religion in Spain, the constitution was one of the most liberal of its time: it affirmed national sovereignty, separation of powers, freedom of the press, free enterprise, abolished corporate privileges (fueros), and established a constitutional monarchy with a parliamentary system. It was one of the first constitutions that allowed universal male suffrage, with some exceptions, through a complex indirect electoral system. It extended political rights for representation to Spanish America and the Philippines, a significant step for the demands of American-born Spaniards.When King Ferdinand VII returned to power in 1814, he dissolved the Cortes and abrogated the constitution, re-establishing absolute monarchy. The constitution was reinstated during the Trienio Liberal (18201823) and again in 18361837 while the Progressives prepared the Constitution of 1837. It was an important model for later constitutions in Spain and Spanish America.

The Cortes of Cádiz was a revival of the traditional cortes (Spanish parliament), which as an institution had not functioned for many years, but it met as a single body, rather than divided into estates as with previous ones.The General and Extraordinary Cortes that met in the port of Cádiz starting 24 September 1810 "claimed legitimacy as the sole representative of Spanish sovereignty", following the French invasion and occupation of Spain during the Napoleonic Wars and the abdication of the monarch Ferdinand VII and his father Charles IV. It met as one body, and its members represented the entire Spanish Empire, that is, not only Spain but also Spanish America and the Philippines.The Cortes of Cádiz was seen then, and by historians today, as a major step towards liberalism and democracy in the history of Spain and Spanish America. The liberal Cortes drafted and ratified the Spanish Constitution of 1812, which established a constitutional monarchy and eliminated many institutions that privileged some groups over others.