| Jurisdiction: | Diocese |
| Mannar | |
| Latin: | Dioecesis Mannarensis |
| Local: | மன்னார் மறைமாவட்டம |
| Country: | Sri Lanka |
| Province: | Colombo |
| Metropolitan: | Colombo |
| Area Km2: | 3,998 |
| Population: | 270,375 |
| Population As Of: | 2013 |
| Catholics: | 89,516 |
| Catholics Percent: | 33.1 |
| Parishes: | 34 |
| Denomination: | Roman Catholic |
| Rite: | Latin Rite |
| Established: | 24 January 1981 |
| Cathedral: | St Sebastian’s Cathedral in Mannar |
| Patron: | Our Lady of Madhu |
| Priests: | 87 |
| Bishop: | Fidelis Fernando |
| Metro Archbishop: | Malcolm Ranjith |
| Vicar General: | Victor Sosai Anthony |
| Map: | Map of Roman Catholic Diocese of Mannar.png |
The Diocese of Mannar (Latin: Dioecesis Mannarensis) is a Roman Catholic diocese for north-western Sri Lanka, administered by the Bishop of Mannar, currently Fidelis Fernando.[1]
The Diocese of Mannar was created on 24 January 1981 from parts of the Diocese of Jaffna.[2] Between 14 January 2016 and 22 November 2017, the position of Bishop remained vacant, the diocese being overseen by Apostolic Administrator and retired Bishop Kingsley Swampillai.
| Bishop | Took office | Left office | ||
|---|---|---|---|---|
| 1st | 1981 | 1992 | ||
| 2nd | 1992 | 2016 | ||
| - | Kingsley Swampillai (as Apostolic Administrator) | 2016 | 2017 | |
| 3rd | 2017 |