The Roman CatholicArchdiocese of Toluca (Latin: Archidioecesis Tolucensis) (erected 4 June 1950 as a diocese and 28 September 2019 as an archdiocese) is a metropolitan archdiocese of the Catholic Church. Along with the Dioceses of Acapulco, Chilapa and Tacámbaro, it lost territory when the Diocese of Ciudad Altamirano was erected in 1964. It further lost territory in 1984 with the formation of the Diocese of Atlacomulco. On 26 November 2009, it lost territory again when Pope Benedict XVI created another suffragan diocese for the Archdiocese of Mexico, the Diocese of Tenancingo.