Roman Catholic Archdiocese of Belgrade Tags: Clerical Administrative Region, Diocese.The Roman Catholic Archdiocese of Belgrade (Latin: Archidioecesis Belogradensis; Serbian Slovenian and Croatian: Beogradska nadbiskupija; Hungarian: Belgrádi főegyházmegye) is an archdiocese located in the city of Belgrade in Serbia. thumbnail area (km2) 5e+10 country Serbia Established 9th century jurisdiction Diocese Learn more... Loading...