Arlington Reservoir
| Site of Special Scientific Interest | |
| Location | East Sussex |
|---|---|
| Grid reference | TQ 535 073 |
| Interest | Biological |
| Area | 100.4 hectares (248 acres) |
| Notification | 1985 |
| Location map | Magic Map |
Arlington Reservoir is a 100.4-hectare (248-acre) biological Site of Special Scientific Interest west of Hailsham in East Sussex, England. It is also a Local Nature Reserve and it is owned and managed by South East Water.