| Unit Name: | 21 Division |
| Dates: | – present |
| Country: | Sri Lanka |
| Branch: | Sri Lanka Army |
| Type: | Division (military) |
| Size: | 23,208 |
| Command Structure: | Security Forces Headquarters – Wanni |
| Garrison: | Anuradhapura, North Central Province |
| Garrison Label: | Division Headquarters |
| Commander1: | Major General W R M M Rathnayake |
The 21 Division is a division of the Sri Lanka Army. Established on 4 April 1988 as 2nd Division, the division is currently based in Anuradhapura in the North Central Province.[1] The division is a part of Security Forces Headquarters – Wanni and has three brigades and seven battalions.[1] The division is responsible for 7100km2 of territory.[2]
The division is currently organised as follows:[3]