1998 in Sri Lanka
The following lists events that happened during 1998 in Sri Lanka.
Incumbents
- President: Chandrika Kumaratunga
- Prime Minister: Sirimavo Bandaranaike
- Chief Justice: G. P. S. de Silva
Governors
- Central Province – E. L. Senanayake ; Stanley Tillekeratne
- North Central Province – Maithripala Senanayake ; G. M. S. Samaraweera
- North Eastern Province – Gamini Fonseka ; Asoka Jayawardena
- North Western Province – Hector Arawwawala
- Sabaragamuwa Province – C. N. Saliya Mathew
- Southern Province – Neville Kanakeratne
- Uva Province – Ananda Dassanayake
- Western Province – K. Vignarajah
Chief Ministers
- Central Province – W. M. P. B. Dissanayake ; vacant
- North Central Province – Jayasena Dissanayake ; vacant
- North Western Province – Nimal Bandara
- Sabaragamuwa Province – Jayatilake Podinilame ; Vacant
- Southern Province – Mahinda Yapa Abeywardena
- Uva Province – Percy Samaraweera ; vacant
- Western Province – Susil Premajayanth ; vacant
Events
- Sri Lankan Civil War
- * Eelam War III
- * Operation Jayasikurui
- 29 January – 1998 Sri Lankan local elections: Local government elections are held in Sri Lanka for 17 local authorities in the Jaffna peninsula, in the north of the country.
- 27–29 September – Bolstered by its successes in 1997, the Liberation Tigers of Tamil Eelam unleashes Operation Unceasing Waves II. The LTTE captures the town of Killinochi in the northeast, but loses Mankulam to the Sri Lankan Army.