Francisco Llobet (1705 - December 5, 1785), also spelled Llovet, was a Spanish military engineer, civil engineer, and architect. He was born in Perpignan, France. Llobet volunteered for the Cuerpo de Ingenieros Militares (Corps of Military Engineers) at just 15. In this capacity he attended the Academia Militar de Barcelona. After graduating, in 1725, he was sent to Oran and then to the Army of Italy where he fought during the War of the Polish Succession (1733 - 1738). In his role as a military engineer, he prepared pre-battle plans of Messina and Syracuse. He then joined the Army of Lombardy for the siege of Mirandola and the blockade of Mantua. He constructed fortifications at Ciduad Rodrgio, Portugal. He Galicia, he directed the construction of the Ferrol Arsenal. Moving on to civilian works, he planned the neighborhood of Magdalena in Ferrol, Galicia. In 1765, he planned the military expansions of Santander. In 1770, he was assigned to Cartagena. Accompanied by his son Rafael, who was serving as assistant engineer, he was assigned to the renovation of the Plaza de Cartagena, but was soon dismissed from the position due to political infighting. He became Director de Ingenieros del Principado de Cataluña in 1774, holding the position until 1784, when he retired due to old age and declining health. He died a year later in 1785.