Institutions.
01. Diocesan Institutions
1. Cathechetical Centre, Batticaloa.
2. Cathechetical Centre, Trincomalee.
3. Eastern Technical Institute, Batticaloa.
4. Home for Elders, Trincomalee (H.C)
5. Home for Elders, Batticaloa (L.S.P)
6. Home for Handicapped Children, Sathurukondan (H.F & S.V.P)
7. Jesuit English Academy and Computer Training Centre, Trincomalee (S.J)
8. Centre for Promotion & Protection of Human Rights, Trincomalee (S.J)
9. Karuna Nivasa Linganagar, Trincomalee.(Mission of Charity)
10. Manresa Retreat House, Batticaloa (S.J)
11. Pastoral Centre, Trincomalee.
12. Social Service Centre (EHED-Caritas), Trincomalee
13. Social Service Centre (EHED-Caritas), Batticaloa
14. Social Communication Centre, Batticaloa
15. Siloam - Vincent Health Service Centre, Batticaloa
16. St. Joseph's Minor Seminary, Batticaloa
17. St. Joseph's Catholic Press, Batticaloa (Charity Brothers)
18. St. Joseph's Technical Institute, Trincomalee (Charity Brothers)
19. "Senthamarai Development Centre" SinnaUppodai, Batticaloa (F.M.M)
02. Diocesan Orphanages
1. Assisi Boy's Orphanage, Kurukkalmadam (CMSF)
2. Carmel Arunodyam Orphanage, Akkaripattu (A.C)
3. De Mello Home for Girls, Muthur (A.C)
4. Glennie's Home for Girls, Trincomalee (H.A)
5. Holy Family Orphanage, Thandavanvely (H.F)
6. Little Flower Girls Orphanage, Kalmunai (A.C)
7. Lilies of the Field, (Rehabilitation Centre) Batticaloa (S.J)
8. St.Helen Home, Sinna Uppodai,(F.M.M)
9. St.Joseph's Home for Girls, Thannamunai (EHED)
10. St.Joseph's Girls Home, Trincomalee (A.C)
11. St.Joseph's Girls Orphanage, Batticaloa (A.C)
12. St.Mary's Boys Orphanage, Batticaloa (F.C)
13. St.Joseph's Orphanage, Trincomalee(F.C)
14. St.Mary's Orphanage, Kalmunai (F.C)
15. St.Peter Claver Peace Home for Boy's Trincomalee (S.J)
16. Girls Orphanage, Valachchenai (G.S)