The Archdiocese of Oviedo is an Latin Church Archdiocese of the Catholic Church in Spain. The archdiocese encompasses roughly the current autonomous community of Asturias or Principality of Asturias. Erected in the 9th century, the diocese was elevated to an archdiocese in 1954. The diocesan see is in the city of Oviedo, where the Catedral de San Salvador is located.

The Metropolitan Cathedral Basilica of the Holy Saviour or Cathedral of San Salvador is a Roman Catholic church and minor basilica in the centre of Oviedo, in the Asturias region of northern Spain.