Royal Factory of La Moncloa (Spanish: Real Fábrica de La Moncloa; variations: Moncloa Porcelain Factory, or Royal Porcelain Factory and Thin Earthenware of the Moncloa, or Real Fabrica de Loza de la Moncloa) (Spanish: Real Fábrica de La Moncloa) was a Spanish manufacturing plant for porcelain and ceramics which was in operation in the 19th century. The Royal Factory of La Moncloa was located in Madrid, in a place called the Granjilla of Jeronimos in Cementerio de La Florida.
When the British attacked French positions in Madrid in 1812, during the Peninsular War they damaged the Real Fábrica del Buen Retiro, a porcelain factory on a site in the Buen Retiro Park. Later that year General Hill took his troops from Madrid to join the main army under Wellington near Alba de Tormes. Before leaving the Spanish capital, the British burned what remained of the factory. Although the building had been fortified as part of French defensive positions in the park, it has been suggested that the destruction was at least in part caused by commercial rivalry on the part of the British, as it represented a mercantilist project designed to reduce the need for imports.
Production resumed after the absolutist restoration, but at a new site in the Moncloa district of Madrid in a building which had once been a villa of the Alva family on the Manzanares River. The Royal Factory of La Moncloa inherited personnel as well as moulds and other materials surviving from the old factory. Founded by Ferdinand VII, the factory was patronized by his second wife, Queen Maria Isabel of Portugal.