Baron Dunleath, of Ballywalter in the County of Down, is a title in the Peerage of the United Kingdom. It was created on 29 August 1892 for the businessman and former Conservative Member of Parliament for Downpatrick, John Mulholland. The Mulholland family were involved in the cotton and linen industry in Ulster in the north of Ireland. The first Baron's son, the second Baron, represented Londonderry North in the House of Commons as a Conservative. His grandson, the fourth Baron, was a member of the Northern Ireland Assembly for the Alliance Party. He was succeeded by his first cousin, the fifth Baron, who had already succeeded his father as second Baronet of Ballyscullion. As of 2017 the titles are held by the fifth Baron's son, the sixth Baron, who succeeded in 1997.