Clytha Park, Clytha, Monmouthshire, is a 19th-century Neoclassical country house, "the finest early nineteenth century Greek Revival house in the county." The wider estate encompasses Monmouthshire's "two outstanding examples of late eighteenth century Gothic", the gates to the park and Clytha Castle. The owners were the Jones family, later Herbert, of Treowen and Llanarth Court. It is a Grade I listed building.