The Diocese of Trincomalee (Latin: Dioecesis Trincomaliensis) is a Roman Catholic diocese for eastern Sri Lanka.
The current bishop is Noel Emmanuel.
[1] In the Eastern Province of Sri Lanka there were two abandon regions.According to the report of Rev.FR Etinne Sameria ( omi), in 1850, in Trincomalee there were five churches with 1,500 Catholics.
Every Sunday sermon was delivered in English and Tamil [2] The diocese was renamed Diocese of Trincomalee–Batticaloa on 23 October 1967.
[1] On 19 December 1975 parts of the diocese were transferred to newly created Apostolic Prefecture of Anuradhapura.