| Jurisdiction: | Diocese |
| Port-de-Paix | |
| Latin: | Dioecesis Portus Pacis |
| Country: | Haiti |
| Metropolitan: | Port-de-Paix |
| Province: | Province of Cap-Haïtien |
| Area Km2: | 4,500 |
| Population: | 550,000 |
| Population As Of: | 2004 |
| Catholics: | 330,000 |
| Catholics Percent: | 60 |
| Parishes: | 17 |
| Denomination: | Roman Catholic |
| Rite: | Latin Rite |
| Established: | 3 October 1861 (years ago) |
| Cathedral: | Cathedral of the Immaculate Conception |
| Bishop Title: | Bishop |
| Bishop: | Charles Peters Barthelus |
The Roman Catholic Diocese of Port-de-Paix (Latin: Dioecesis Portus Pacis), erected 3 October 1861, is a suffragan of the Archdiocese of Cap-Haïtien.