The Archdiocese of Trnava (Slovak: Trnavská arcidiecéza Latin: Archidioecesis Tyrnaviensis) is a Roman Catholic archdiocese in western Slovakia including bigger part of the Trnava and parts of Nitra and Trenčín regions. It has its seat in Trnava. In 2013 Pope Francis appointed Auxiliary Bishop Ján Orosch as the next Archbishop of the Archdiocese of Trnava.