Mariano Valguarnera (7 October 1564 – 28 August 1634) was an Italian philologist, writer and diplomat.
Mariano Valguarnera was the son of Fabrizio Valguarnera, baron Godrano. He knew classical and modern languages (Latin, Greek, Hebrew, French, Spanish), and studied theology, philosophy and mathematics. After the death of his wife he became a priest. In 1629 he participated in a diplomatic mission to Madrid. His diplomatic talent was appreciated by Philip IV of Spain, who made him royal chaplain and abbot. After returning to Italy, he lived at the court of Pope Urban VIII, on whose behalf he translated and commented the works of Anacreon. He diedÃÂ on August 28, 1634,ÃÂ and was buriedÃÂ in the church of San DomenicoÃÂ inÃÂ PalermoÃÂ (the Pantheon of Sicily). His most important work is Il Discorso dell'origine ed antichitÃÂ di Palermo e dei primi abitatori della Sicilia (Discourse on the Origin and Antiquity of Palermo and the first inhabitants of Sicily) (1614).