Dominick Browne, 1st Baron Oranmore and Browne PC (28 May 1787 – 30 January 1860), was an Irish politician.
Browne was the son of Dominick Geoffrey Browne and his wife Margaret. She was the daughter of the Hon. George Browne, 4th son of John, 1st Earl of Altamont.
He sat as Member of Parliament for County Mayo from 1814 to 1826 and from 1830 to 1836 and was admitted to the Irish Privy Council in 1834. In 1836 he was raised to the Peerage of Ireland as Baron Oranmore and Browne, of Carrabrowne Castle in the County of the Town of Galway and of Castle Macgarret in the County of Mayo.
Lord Oranmore and Browne married Catherine Anne Isabella, daughter of Henry Monck, in 1811. He died in January 1860, aged 72, and was succeeded in the barony by his son Geoffrey. Lady Oranmore and Browne died in 1865.