John Mulholland, 1st Baron Dunleath

John Mulholland, 1st Baron Dunleath (16 December 1819 – 11 December 1895) was an Irish businessman and Conservative Member of Parliament.

Dunleath was born the son of Andrew Mulholland of Ballywalter Park in County Down. He was involved in the Mulholland family cotton and linen industry and also represented Downpatrick in the British House of Commons from 1874 to 1885. In 1892 he was raised to the peerage as Baron Dunleath, of Ballywalter in the County of Down.

Lord Dunleath married Frances Louisa, daughter of Hugh Lyle, in 1851. He died in December 1895, aged 75, and was succeeded in the barony by his second son Henry. Lady Dunleath died in 1909.