| Jurisdiction: | Diocese |
| Puerto Iguazú | |
| Latin: | Dioecesis Portus Iguassuensis |
| Local: | Diócesis de Posadas |
| Country: | Argentina |
| Metropolitan: | Corrientes |
| Province: | Corrientes |
| Area Km2: | 17,000 |
| Population: | 300,000 |
| Population As Of: | 2004 |
| Catholics: | 210,000 |
| Catholics Percent: | 70 |
| Parishes: | 25 |
| Denomination: | Roman Catholic |
| Rite: | Roman Rite |
| Established: | 16 June 1986 (years ago) |
| Cathedral: | Cathedral of Our Lady of Mount Carmel in Puerto Iguazú |
| Patron: | St Roque González de Santa Cruz |
| Bishop: | Nicolás Baisi |
| Bishop Title: | Bishop |
| Metro Archbishop: | Andrés Stanovnik, OFM Cap |
| Emeritus Bishops: | Marcelo Raúl Martorell |
The Roman Catholic Diocese of Puerto Iguazú (Latin: Dioecesis Portus Iguassuensis) is in the frontier city of Puerto Iguazú, in the province of Misiones in Argentina.
On 16 June 1986, Blessed John Paul II established the Diocese of Puerto Iguazú from the Diocese of Posadas. It lost territory in 2009 when the Diocese of Oberá was established.[1] [2]