The Diocese of Tarazona (Latin, Turiasonensis) is a Roman Catholic bishopric 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.