Field Barn Heaths, Hilborough is a 17.9-hectare (44-acre) biological Site of Special Scientific Interest north-west of Hilborough in Norfolk, England.

[1][2] It is part of the Breckland Special Area of Conservation[3] and Special Protection Area.

[4] This light sandy grassland site is maintained by rabbit grazing and it has a rich variety of flora.

There are also areas of ungrazed grassland and oak and hawthorn woodland.

[5] The site is private land with no public access.