Fivehead Arable Fields (grid reference ST337224) is a 10.3 hectare (25.4 acre) biological Site of Special Scientific Interest near the village of Fivehead in Somerset, notified in 1990.

This site has one of the most important assemblages of arable weeds in Britain, several of which are now nationally rare or scarce. There is a large population of the nationally rare Broad-fruited Cornsalad (Valerianella rimosa).

• Fivehead Arable Fields from Somerset Wildlife Trust