List of Sri Lanka Test cricket records
Overall

Runs
Player
Opponent
Venue
Date
374
Mahela Jayawardene
South Africa
Sinhalese Sports Club Ground, Colombo
27 July 2006
340
Sanath Jayasuriya
India
R. Premadasa Stadium, Colombo
2 August 1997
319
Kumar Sangakkara
Bangladesh
Zahur Ahmed Chowdhury Stadium, Chittagong
4 February 2014
287
Kumar Sangakkara
South Africa
Sinhalese Sports Club Ground, Colombo
27 July 2006
275
Mahela Jayawardene
India
Sardar Patel Stadium, Ahmedabad
16 November 2009
Last updated: 23 February 2019
Last updated: 23 February 2019
Last updated: 23 February 2019
Last updated: 23 February 2019
Last updated: 23 February 2019

Question: What Sri Lankan players scored triple centuries? 
Answer: Jayawardene, Jayasuriya and Kumar Sangakkara [319] are the Sri Lankan players who have scored triple centuries.