| Cleeve Hill | |
| Aos: | Somerset |
| Interest: | Biological |
| Coordinates: | 51.1766°N -3.3518°W |
| Displaymap: | Somerset |
| Area: | 15.1ha |
| Enref: | 1005755 |
Cleeve Hill is a 15.1 hectare (37.4 acre) biological Site of Special Scientific Interest between Old Cleeve and Watchet in Somerset, notified in 1989.
The site covers a moderate to steeply sloping south face of the valley of the Washford River. It supports a rich and diverse calcareous grassland community with associated mixed woodland and scrub. The site contains two species of plant which are nationally rare in Great Britain, Nit-grass (Gastridium ventricosum) and Rough Marsh-mallow (Althaea hirsuta).[1]