The Roman Catholic Diocese of Concordia (erected 10 April 1961) is in Argentina and is a suffragan of the Archdiocese of Paraná.
Ordinaries Ricardo Rösch (1961–1976) Adolfo Gerstner (1977–1998) Héctor Sabatino Cardelli (1998–2004), appointed Bishop of San Nicolás de los Arroyos Luis Armando Collazuol (2004–2023), retired Gustavo Gabriel Zurbriggen (2023– )
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