The Catholic Church in Argentina comprises fourteen ecclesiastical provinces each headed by a Metropolitan archbishop. The provinces are in turn subdivided into 48 dioceses and 14 archdioceses each headed by a bishop or an archbishop.
Latin/rite-mixed Provinces and (Arch)Dioceses
Latin Exempt Jurisdictions
- Military Bishopric of Argentina (est.1957)
Ecclesiastical province of Bahía Blanca
- Metropolitan Archdiocese of Bahía Blanca (est. 1934)
Ecclesiastical province of Buenos Aires
- Metropolitan Archdiocese of Buenos Aires (est. 1620)
Ecclesiastical province of Córdoba
- Metropolitan Archdiocese of Córdoba (est. 1570 as Diocese of Tucumán)
Ecclesiastical province of Corrientes
- Metropolitan Archdiocese of Corrientes (est. 1910)
Ecclesiastical province of La Plata
- Metropolitan Archdiocese of La Plata (est. 1897)
Ecclesiastical province of Mercedes–Luján
- Archdiocese of Mercedes–Luján (est. 1934)
Ecclesiastical province of Mendoza
- Metropolitan Archdiocese of Mendoza (est. 1934)
Ecclesiastical province of Paraná
- Metropolitan Archdiocese of Paraná (est. 1859)
Ecclesiastical province of Resistencia
- Metropolitan Archdiocese of Resistencia (est. 1939)
Ecclesiastical province of Rosario
- Metropolitan Archdiocese of Rosario (est. 1934)
Ecclesiastical province of Salta
- Metropolitan Archdiocese of Salta (est. 1806)
Ecclesiastical province of San Juan de Cuyo
- Metropolitan Archdiocese of San Juan de Cuyo (est. 1826)
Ecclesiastical province of Santa Fe de la Vera Cruz
Ecclesiastical province of Tucumán
- Metropolitan Archdiocese of Tucumán (est. 1897)
Eastern Catholic Sui iuris Jurisdictions
- Eparchy of San Gregorio de Narek en Buenos Aires
- Melkite Catholic Apostolic Exarchate of Argentina
- Ordinariate for Eastern Catholics in Argentina (other Eastern Catholic rites)