| Llantrisant Common and Pastures | |
| Iucn Category: | IV |
| Map: | Wales |
| Relief: | 1 |
| Location: | Llantrisant, Rhondda Cynon Taf |
| Coordinates: | 51.5423°N -3.3785°W |
| Coords Ref: | [1] |
| Area: | 113ha |
| Established: | 2000 |
Llantrisant Common and Pastures is a 113ha Site of Special Scientific Interest in Llantrisant, Rhondda Cynon Taf, south Wales. It was established in 2000.
The Countryside Council for Wales states that the site has been categorized as a Site of Special Interest for "...its extensive area of acidic marshy grassland in a lowland setting, as well as for smaller areas of species-rich neutral grassland, dry acidic grassland and flush. It is also of special interest for populations of two rare plants: Cornish moneywort (Sibthorpia europaea) and a liverwort known as bog earwort (Scapania paludicola).[2]