The institutions that are under the purview of the National Security Division.
- Rakna Security Lanka Limited
- National Authority for the Implementation of Chemical Weapons Convention
- National Dangerous Drugs Control Board
- School of Defence Services
- Ranaviru Seva Authority
- Defence Research and Development Center
- Institute of National Security Studies Sri Lanka
- National Institute of Defence, Sri Lanka
- National Security Fund
- 'Api Venuwen Api' Fund