Juan José de Aycinena y Piñol (Guatemala City, 29 August 1792 – Guatemala City, 17 February 1865) was an ecclesiastical and intellectual conservative in Central America. He was President of the Pontifical University of San Carlos Borromeo from 1825 to 1829 and then of the Universidad Nacional from 1840 to 1865. He was a thinker criticized by liberal historians for his strong relationship with the conservative government of General Rafael Carrera and for eliminating the possibility of getting the Central American Union which the Liberals wanted. His participation in the government has been assessed more objectively in research conducted between 1980 and 2010. He was heir in 1814 to the noble title of III Marquess of Aycinena, and bishop in partibus of Trajanopolis from 1859. He had a taste