| Jurisdiction: | Diocese |
| Morón | |
| Latin: | Dioecesis Moronensis |
| Local: | Diócesis de Morón |
| Country: | Argentina |
| Metropolitan: | Buenos Aires |
| Province: | Buenos Aires |
| Area Km2: | 130 |
| Population: | 655,000 |
| Population As Of: | 2004 |
| Catholics: | 511,737 |
| Catholics Percent: | 78 |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Established: | 11 February 1957 (years ago) |
| Cathedral: | Cathedral Basilica of the Immaculate Conception in Morón |
| Bishop Title: | Bishop |
| Bishop: | Jorge Vázquez |
| Metro Archbishop: | Mario Aurelio Poli |
The Diocese of Morón is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Argentina. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Buenos Aires in Argentina.
Its cathedra is a Minor Basilica : Catedral Basílica Inmaculada Concepción del Buen Viaje, in Morón, Buenos Aires, in the Argentine province of Buenos Aires, capital of the Morón partido, in the Greater Buenos Aires metropolitan area.
As per 2014, it pastorally served 664,000 Catholics (90.7% of 732,000 total) on 130 km2 in 53 parishes with 69 priests (53 diocesan, 16 religious), 30 deacons, 86 lay religious (25 brothers, 61 sisters) and 5 seminarians.