The Archdiocese of Tarragona is a Latin Church ecclesiastical territory located in north-eastern Spain, in the province of Tarragona, part of the autonomous community of Catalonia. The archdiocese heads the ecclesiastical province of Tarragona, having Metropolitan authority over the suffragan dioceses of Girona, Lleida, Solsona, Tortosa, Urgell and Vic.

Tarragona is a province of eastern Spain, in the southern part of the autonomous community of Catalonia. It is bordered by the provinces of Castellón, Teruel, Zaragoza, Lleida and Barcelona and by the Mediterranean Sea.