| Postal Address | Dartonfield, Agalawatta, Sri Lanka, 12200 |
| Telephone | |
| Director | 034 - 2248457 |
| Additional Director | 034 - 2248458 |
| Deputy Director Research (Biology) | 034 - 3346118 |
| General | 034 - 2247426 |
| 034 - 2247383 | |
| 034 - 2248459 | |
| 034 - 3349999 | |
| Fax | 034 - 2247427 |
| dirrri[at]sltnet.lk |
| Postal Address | Telewela Road, Ratmalana |
| Telephone | |
| Chairman | 011 - 2635019 |
| Director | 011 - 2633351 |
| Deputy Director Research (Technology) | 011 - 2633352 |
| General | 011 - 2635851 |
| 011 - 2635852 | |
| Board office | 011 - 2635142 |
| Fax | 011 - 2605171 |
| dirrub[at]sltnet.lk |
| Nivitigalakele Sub-station Genetics and Plant Breeding Department & Training Centre |
|
| Postal Address | Matugama, Sri Lanka, 12100 |
| Telephone | 034 - 2247368 |
| Telephone / Fax | 034 - 2247199 |
| rrigpb[at]sltnet.lk | |
| Kuruwita Sub-station | |
| Postal Address | Kuruwita, Ratnapura |
| Telephone - Asst. Estate Manager | 045 - 3460537 |
| Telephone / Fax. | 045 - 2262115 |
| rrikuruwita[at]sltnet.lk | |
| Polgahawela Sub-station | |
| Postal Address | Narampola Estate, Nungamuwa, Yatigaloluwa |
| Telephone | 037- 2244120 |
| Monaragala Sub-Station | |
| Postal Address | Kubukkana, Monaragala |
| Telephone | 055 - 3600707 |