- Generalized System of Preference (GSP)
- Asia Pacific Trade Agreement (APTA)
- Global System of Trade Preferences among Developing Countries (GSTP)
- India – Sri Lanka Trade Agreement (ISFTA)
- Pakistan – Sri Lanka Trade Agreement (PSFTA)
- South Asian Free Trade Agreement (SAFTA)
- South Asian Preferential Trade Arrangement (SAPTA)
- Sri Lanka – Singapore Free Trade Agreement (SLSFTA)