Bull's Wood is a 12 hectare nature reserve east of Cockfield in Suffolk, England.

It is managed by the Suffolk Wildlife Trust,[1] and is part of the Thorpe Morieux Woods Site of Special Scientific Interest.

[2] Flora in this wood include early-purple orchids, herb-paris and the uncommon oxlips.

There are roe deer, marsh tits, and butterflies such as gatekeepers, speckled woods and orange tips.

[1] There is access by a footpath from Palmers Farm.