Carlos Francisco de Croix, marqués de Croix (1699 in Lille, Flanders – 1786 in Valencia, Spain), was a Spanish general and viceroy of New Spain, from August 25, 1766 to September 22, 1771, a period of considerable turbulence.
Carlos Francisco de Croix served in the Spanish army, where he rose to the rank of general. He was commandant of the garrison in Ceuta, one of the Spanish possessions in Africa, and later captain general of Galicia. He was serving in Galicia at the time of his appointment to the viceroyalty of New Spain.
He became viceroy of New Spain in 1766, in succession to Joaquín de Montserrat, who had clashed with visitador (inspector) José de Gálvez. He arrived in Veracruz on July 10, 1766. The transfer of power occurred at Otumba, en route to Mexico City, on August 23, 1766, but his term of office is usually dated from his formal entry into Mexico City two days later. His nephew, Teodoro de Croix, future Commandant General of the Provincias Internas and Viceroy of Peru, arrived in his retinue as Captain of the Viceroy's Guard.
The sole principle of his administration was absolute obedience to the king, whom he always referred to as "mi amo".
It fell to Croix to expel the Jesuits from the colony (June 25, 1767) and confiscate their properties. In this he was aided by the visitador (inspector general), José de Gálvez. Troops were used to remove the Jesuits from their monasteries and colleges; they were allowed to leave with scarcely the clothes on their backs. They were escorted to Veracruz and deported to Italy. Among the Jesuits expelled were Fathers Andrés Cavo, Francisco Javier Clavijero and Francisco Javier Alegre, distinguished scholars. The College of San Ildefonso was closed.