The Diocese of Segorbe-Castellón is a Latin Church diocese of the Catholic Church located in north-eastern Spain, in the province of Castellón, part of the autonomous community of Valencia. The diocese forms part of the ecclesiastical province of Valencia, and is thus suffragan to the Archdiocese of Valencia.

The Archdiocese of Valencia is a Latin Church diocese of the Catholic Church located in north-eastern Spain, in the province of Valencia, part of the autonomous community of Valencia. The archdiocese heads the ecclesiastical province of Valencia, with authority over the suffragan dioceses of Ibiza, Majorca, Minorca, Orihuela-Alicante and Segorbe-Castellón. The archbishops are seated in Valencia Cathedral. On 28 August 2014, Pope Francis appointed Cardinal Antonio Cañizares Llovera as the next archbishop of Valencia.