Dr. Alonso Núñez de Haro y Peralta was archbishop of Mexico from September 12, 1772, to May 26, 1800, and viceroy of New Spain from May 8, 1787, to August 16, 1787.

The Archdiocese of Mexico is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church that is situated in Mexico City, Mexico. It was erected as a diocese on 2 September 1530 and elevated to an archdiocese on 12 February 1546. The archdiocese is one of the largest in the world, with over four million Catholics, surpassed only by Kinshasa, Guadalajara, São Paulo, Puebla de los Ángeles, Santiago de Guatemala, and Milan.