Alberto Melloni (Reggio nell'Emilia, 6 January 1959) is an Italian church historian, primarily known for his work on the Second Vatican Council.
He studied in Bologna, at Cornell and in Fribourg (Switzerland) and he has taught at the University of Bologna and Roma Tre University. He is currently Professor of the History of Christianity at the University of Modena-Reggio Emilia. Holder of the Unesco Chair on religious pluralism and peace, he is Director of the Fondazione per le scienze religiose “Giovanni XXIII” in Bologna.
He is principal investigator for the European Infraia Rei_Res project headed by the Fondazione, and coordinator of the Resilience research infrastructure project. He spearheaded the establishment of the European Academy of Religion. A research platform which includes institutions, associations, academies, publishers, reviews concerned with the study of religion throughout Europe, the Mediterrean, Middle East, the Balcans, Caucasus and Russia.
He worked on the History of the Second Vatican Council directed by Giuseppe Alberigo, and directed the Edizione nazionale dei diari di A.G. Roncalli (Istituto per le scienze religiose, Bologna 2003-2008), the Dizionario del sapere storico religioso del 900 (Il Mulino, Bologna 2010) and Cristiani d'Italia. Chiese, stato, società 1861-2011 (Treccani, Rome 2011).
He is chief editor for the project Conciliorum oecumenicorum generaliumqe decreta in Brepols's Corpus Christianorum and for the Mansi 3, a digital edition of all the church councils held in the course of history. He is responsible for the European research network on Pope Pius XI, and director of the Enciclopedia costantiniana for Treccani. He edited Benedetto XV. Papa Giacomo della Chiesa nel mondo dell'inutile strage, 2 voll. (il Mulino, Bologna 2017) and Lutero. Un cristiano fra riforme e modernità 2 voll. (il Mulino, Bologna 2017), also published in English and German by De Gruyter, 2017.
He has published works on medieval canon law, the church and the state in the twentieth century, on the Conclave. His most recent publications are: Papa Giovanni. Un cristiano e il suo concilio (Einaudi, Torino 2009), Pacem in terris. Storia dell'ultima enciclica di papa Giovanni (Laterza, Roma-Bari 2010), Le cinque perle di Giovanni Paolo II (Mondadori, Milano 2011).
He is an associate of the Accademia dei Lincei, honorary member of the Accademia Rubiconia, alderman for the Académie internationale des sciences religieuses, member of the scientific committee of the Enciclopedia Italiana, member of the trustees board for the celebrations of the 150th anniversary of Italy's unification, board member of Refo500, board member for the Dizionario biografico degli italiani, member of the international board for reviews such as the Revue d'histoire ecclésiastique in Leuven, Schweizerischen Zeitschrift für Religions- und Kulturgeschichte in Fribourg, and Studia Historiæ Ecclesiasticæ published by the University of South Africa.