Tags: Clerical Administrative Region, Diocese.
The Roman Catholic Diocese of Sisak (Croatian: Sisačka biskupija; Latin: Dioecesis Sisciensis) is a diocese in the Ecclesiastical province of Zagreb in Croatia. Its see is in the city of Sisak. On December 5 2009 Pope Benedict XVI erected the residential Diocese of Sisak until then a Titular see of the Roman Catholic Church. Its territory was taken from the Archdiocese of Zagreb.