Mario De Nonno (Born in Castellammare di Stabia on 30 January 1954) Full Professor, since 1986, in the scientific – disciplinary sector “Latin language and Literature”, he first taught at the University of Chieti, then at La Sapienza University and finally, since its foundation, at Roma Tre University where he was Dean of the Faculty of Letters and Philosophy, Head of the Department of Ancient World Studies and then Head of the Department of Humanities. 
He was member of the Academic Senate that drew up the first University Statute and he has covered the role from 1997 to 2017; he also coordinated, at different times, the Board of Academic Chairs of Departments, the Board of Research within the Academic Senate and he has been Deputy Rector, delegate for the development of research activities.
His main research interest is in the field of historical grammar and Latin studies, particularly towards manuscripts tradition, literary and textual criticism. He deepened his research especially in practice of teaching in ancient history and on relationship between the study of the language and law in Constantinople. With reference to the topic of text transmission and criticism of the text of Latin literature, in 2010 he was entrusted with the writing of the opening chapter of the Oxford Handbook of Roman Studies and he has devoted more punctual philology studies to Plautus, Nevius, Ennius, Cecilius Statius, Lucilius, Cicero, Varro, Sallust, Virgil, Seneca, Petronius, Tacitus, as well as to late-ancient poets and prose writers. He is currently cooperating on the edition of De officio proconsulis – Ulpiano.
In 1996, the Lincei Academy awarded him the National Prize of the President of the Republic for moral, historical and philological sciences. He is currently member of the National Edition Committee of works of Biondo Flavio, of the «Pontificia Academia Latinitatis» and of the «Academia Europea». Since 2019, he is chairman of the University Council of Latin Studies. He takes part in the scientific and steering committees of several “ Class A” philology journals. He has directed, since 2001, the international series of editions «Collectanea grammatica Latina» (ed. Olms-Weidmann). He has been Principal Investigator of co-funded PRIN in the years 1998, 2001, 2004, 2007, 2009 and 2017. He participated in the drafting of the «Scriptores iuris Romani» (S.U.M. – Firenze) and he was awarded, for this project, a Senior Fellowship at the University of California (Berkeley – Robbins Collection).