Roman Catholic Diocese of Fall River
| Diocese of Fall River Dioecesis Riverormenensis | |
|---|---|
| Catholic | |
| Cathedral of St. Mary of the Assumption | |
| Coat of arms | |
| Location | |
| Country | United States | 
| Territory | Massachusetts counties of Barnstable, Bristol, Dukes, Nantucket, and the towns of Marion, Mattapoisett, and Wareham on the south coast of Plymouth County | 
| Episcopal conference | United States Conference of Catholic Bishops | 
| Ecclesiastical region | Region I | 
| Ecclesiastical province | Boston | 
| Metropolitan | Boston | 
| Coordinates | 41°42′39″N 71°08′50″W / 41.71083°N 71.14722°W | 
| Statistics | |
| Area | 3,107 km2 (1,200 sq mi) | 
| Population 
 
 | 
 
 
 | 
| Parishes | 78 | 
| Information | |
| Denomination | Catholic | 
| Sui iuris church | Latin Church | 
| Rite | Roman Rite | 
| Established | March 12, 1904 | 
| Cathedral | Cathedral of St. Mary of the Assumption | 
| Patron saint | Saint Mary of the Assumption | 
| Secular priests | 123 plus 63 religious priests | 
| Current leadership | |
| Pope | Leo XIV | 
| Bishop | Edgar Moreira da Cunha | 
| Metropolitan Archbishop | Richard Henning | 
| Map | |
| Website | |
| www | |
The Diocese of Fall River (Latin: Dioecesis Riverormensis) is a Latin Church ecclesiastical territory, or diocese, of the Catholic Church in southeastern Massachusetts in the United States. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Boston.
The mother church of the diocese is St. Mary's Cathedral in Fall River. The patron saint of the diocese is Mary, mother of Jesus. The current bishop as of 2025 is Edgar Moreira da Cunha.