| 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 |