Roman Catholic Diocese of Pinerolo Tags: Clerical Administrative Region, Diocese.The Diocese of Pinerolo (Latin: Dioecesis Pineroliensis) is a Roman Catholic ecclesiastical territory in the province of Turin of Piedmont Northern Italy. It is a suffragan of the archbishopric of Turin. thumbnail area (km2) 1.44e+09 country Italy Established 23 December 1748 province Roman Catholic Archdiocese of Turin Learn more... Loading...