Dinefwr Park National Nature Reserve
| Dinefwr Park | |
|---|---|
| National Nature Reserve | |
Dinefwr Park  | |
| Location | Carmarthenshire, Wales | 
| Nearest city | Llandeilo | 
| Coordinates | 51°52′48″N 4°00′58″W / 51.880°N 4.016°W | 
| Area | 800 acres (320 ha) | 
| Established | 2007 | 
| Governing body | National Trust | 
| Dinefwr Estate | |
| Site of Special Scientific Interest | |
| Location | Carmarthenshire | 
| Grid reference | SN615224 | 
| Interest | Biological | 
| Area | 553 acres (224 ha) | 
| Notification | 1999 | 
| Official name | Plas Dinefwr | 
| Type | Grade I | 
| Designated | 2002 | 
| Reference no. | PGW (Dy) 12 (CAM) | 
Dinefwr Park National Nature Reserve is an 800 acres (320 ha) estate about a mile (1.5 kilometres) from the centre of Llandeilo in Carmarthenshire owned by the National Trust, with a mansion in the centre. The highest point is occupied by the ruined Dinefwr Castle, ancient castle of the Deheubarth kingdom. It is a grade I Historic Park and a Site of Special Scientific Interest.