| Country | Chess tournament name | Start | End |
|---|---|---|---|
 |
National Major Divison Chess Championship 2025 - Northern Province Open | ||
|
National Major Divison Chess Championship 2025 - Western Province ( Open ) | 2025-05-09 | 2025-05-09 |
|
National Major Divison Chess Championship 2025 - Western Province ( Womens ) | 2025-05-09 | 2025-05-09 |
|
National Major Divison Chess Championship 2025 - Northern Province Womens | ||
|
Sri Lanka National Women's Major Chess Champioship 2025 - Southern Province | 2025-05-10 | 2025-06-01 |