| Site of Special Scientific Interest | |
 | |
  Location within Somerset | |
| Location | Somerset |
|---|---|
| Grid reference | ST465538 |
| Coordinates | 51°16′51″N 2°46′06″W / 51.28082°N 2.76844°W |
| Interest | Biological and Geological |
| Area | 441.3 hectares (4.413 km2; 1.704 sq mi) |
| Notification | 1952 |
| Natural England website | |
The Cheddar Complex is a 441.3-hectare (1,090-acre) biological Site of Special Scientific Interest near Cheddar around the Cheddar Gorge and north east to Charterhouse in the Mendip Hills, Somerset, England, notified in 1952.
The very large area includes 4 SSSIs formerly known as: Cheddar Gorge SSSI; August Hole/Longwood Swallet SSSI; GB Cavern Charterhouse SSSI; and Charterhouse on-Mendip SSSI.
It is part owned by the National Trust, commercial landowners including the Marquess of Bath's Longleat Estate; and part managed by the Somerset Wildlife Trust.