Appleby Fells is a Site of Special Scientific Interest in the Eden district of Cumbria, England, near Appleby-in-Westmorland.

The fells rise steeply above the Eden Valley, the scarp slope being deeply dissected by streams.

In places there are carboniferous limestone crags and the grassland here is dominated by sheep's fescue, with some crested hair-grass and blue moor-grass.

[1] The scree areas have a different flora, and the inaccessible ledges on the crags, and in the cracks in the limestone pavement of Middle Fell and Musgrave Scar, have some taller plants such as, Pimpinella saxifraga, mountain St-John's wort, vernal sandwort, alpine pennycress, hoary whitlow grass, lesser meadow rue and the uncommon Pyrenean scurvy-grass.

[1] The pools and tarns provide habitat for waders including golden plover, dunlin, snipe, oystercatcher, common sandpiper and redshank, and there are also birds of prey such as merlin, peregrine falcon, raven and barn owl.