| Group Name | |
|---|---|
| Members (1458) | Electrical |
| Members (1169) | Mechanical |
| Members (196) | Chemical |
| Members (304) | Computer |
| Members (552) | Production |
| Members (5022) | Civil |
| Members | E15 |
| Members | Dharmaraja College Old Boys' Union |
| Members | Old Rajans 79/80 Group |
| Members | Colombo Branch |
| Members | Kegalle Branch |
| Members | Anuradhapura Branch |
| Members | Old Rajans Scout Association |
| Members | Cricket Foundation |
| Members | Old Hostellers |
| Members | Professional Association |
| Members | Rugger Association |
| Members | Centenary Group |
| Members | 75 Group |
| Members | 85 Group |