Nunwick Hall is a privately owned 18th-century country house near Simonburn, Northumberland in North East England.

In 1738 Lancelot Allgood married his cousin Jane Allgood, who was heiress to the Nunwick estate,[2] and they built the present three-storey five-bayed house [1] to a Georgian style design by architect Daniel Garrett.

Improvements made in 1829 by architect Ignatius Bonomi included a new entrance porch and east wing.

The grounds were laid out in 1760 and are protected as a Registered Historic Park and as a Grade II listed building.

[3] The ruinous Simonburn Castle to the west was partly rebuilt as a Gothic eye-catcher or folly in 1766, to be seen from Nunwick Hall, but has since collapsed.