Waresley and Gransden Woods is a 50-hectare (120-acre) nature reserve between Waresley and Great Gransden in Cambridgeshire, England.

It is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.

The site is a 54.2-hectare (134-acre) biological Site of Special Scientific Interest called Waresley Wood, with slightly different boundaries (but including Gransden Wood).

[2][1][3] This ancient woodland is mainly ash, field maple and hazel.

There are also rides with diverse flora such as the herbs bush vetch, meadowsweet, greater burnet-saxifrage and self-heal.