Chiswell Walled Garden is a community walled garden, located on the Isle of Portland, Dorset, England. It is found in the village of Chiswell, close to Chesil Beach, within the remaining ruins of an old Jacobean house. The garden was created between 2001-06 by the Chiswell Community Trust, with funding from Countryside Agency under their Doorstep Green Initiative. It is maintained by volunteer members of the trust and is open to the public.