Greatness Brickworks is a 7.8-hectare (19-acre) geological Site of Special Scientific Interest in Sevenoaks in Kent.

[1][2] It is a Geological Conservation Review site.

[3] This Cretaceous site is highly fossiliferous, with many ammonites.

It is described by Natural England as "of vital importance in biostratigraphic research on the Gault of the Weald".

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