Mariusz Biliniewicz (MA/MPhil, PhD, GCLTHE) has been serving as Director of the Liturgy Office in the Archdiocese of Sydney since 2022. Previously he has worked at the University of Notre Dame Australia as Senior Lecturer in Theology and Associate Dean of Research and Academic Development. He has studied and taught in Poland, Ireland and Australia and has spoken and published internationally on a number of theological topics.

Apart from sacramental and liturgical theology, his theological interest include ecclesiology and its intersections with moral theology, Second Vatican Council, faith and reason and general systematic theology.