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| Cathedral of the Most Holy Trinity | |
|---|---|
 | |
  Cathedral of the Most Holy Trinity Location in Ireland | |
| 52°15′41″N 7°06′40″W / 52.2614°N 7.11109°W | |
| Location | Barronstrand Street, Waterford, Ireland |
| Denomination | Roman Catholic |
| History | |
| Status | Cathedral |
| Consecrated | 1793 |
| Architecture | |
| Style | Classical |
| Completed | 1793 |
| Specifications | |
| Materials | Limestone |
| Administration | |
| Province | Cashel and Emly |
| Diocese | Waterford and Lismore |
| Parish | Cathedral |
| Clergy | |
| Bishop(s) | Alphonsus Cullinan |
The Cathedral of the Most Holy Trinity is the cathedral church of the Roman Catholic Diocese of Waterford and Lismore located in Barronstrand Street, Waterford City, Ireland. The cathedral is the oldest post-Reformation Catholic cathedral in Ireland, pre-dating the Roman Catholic Relief Act 1829 by some 36 years.[1]