The Diocese of Tarazona is a Latin diocese of the Catholic Church located in north-eastern Spain, in the provinces of Zaragoza, Soria, Navarre and La Rioja, forming part of the autonomous communities of Aragón, Castile-Leon, Navarre and La Rioja. The diocese forms part of the ecclesiastical province of Zaragoza, and is thus suffragan to the Archdiocese of Zaragoza.

The Archdiocese of Saragossa is a Latin diocese of the Catholic Church located in north-eastern Spain, in the province of Zaragoza, part of the autonomous community of Aragón. The archdiocese heads the ecclesiastical province of Saragossa, having metropolitan authority over the suffragan dioceses of Barbastro-Monzón, Huesca, Tarazona, and Teruel and Albarracín.