| Jurisdiction: | Diocese |
| San Juan de la Maguana | |
| Latin: | Dioecesis Sancti Ioannis Maguanensis |
| Country: | Dominican Republic |
| Metropolitan: | San Juan de la Maguana |
| Province: | Province of Santo Domingo |
| Area Km2: | 7,476 |
| Population: | 550,000 |
| Population As Of: | 2004 |
| Catholics: | 450.000 |
| Catholics Percent: | 81.8 |
| Parishes: | 29 |
| Denomination: | Roman Catholic |
| Rite: | Latin Rite |
| Established: | 25 September 1953 (years ago) |
| Cathedral: | Cathedral of St. John the Baptist |
| Bishop Title: | Bishop |
| Map: | Rep Dominicana - Diocesi di San Juan de la Maguana.png |
The Roman Catholic Diocese of San Juan de la Maguana (Latin: Dioecesis Sancti Ioannis Maguanensis) (erected 25 September 1953 as the Territorial Prelature of San Juan de la Maguana, elevated 19 November 1969) is a suffragan diocese of the Archdiocese of Santo Domingo.
| Year | Along with | To form | |
|---|---|---|---|
| 1976 | Diocese of Barahona |