Prof. Željko Tanjić, PhD was ordained a priest of the Zagreb Archdiocese in 1994. He received his doctorate in 2000 at the Pontifical Gregorian University in Rome. From 2009 to 2011, he was the head of the Department of Fundamental Theology at the Catholic Theological Faculty of the University of Zagreb and the director of the publishing house Kršćanska sadašnjost. Since 2011 he has been the rector of the Catholic University of Croatia. He is the author of two books and a large number of scientific and professional articles in the field of fundamental theology. He has been a member of the International Theological Commission from 2014 to 2019.