Coolamber Hall-House is an Anglo-Norman ruin in County Longford, Ireland that is dated to the early 13th century.

[1] Possibly the residence of Thomas Nugent, 4th Earl of Westmeath, one of the commissioners for Plantation of Longford in 1620.

[2][3] Described by Samuel Lewis as ‘the ruins of an old castle, which was besieged by Oliver Cromwell, it formed the boundary of the English Pale’.

[1] Coolamber Hall-house consists of a two-storey structure, located on a circular platform approximately 4m high and 40m in diameter.

The platform is possibly an older early medieval ringwork that was subsequently reused as a bawn.