Earl of Ranfurly, of Dungannon in the County of Tyrone, a title in the Peerage of Ireland, was created in 1831 for Thomas Knox, 2nd Viscount Northland.

His grandson, the sixth Earl, mainly known as Dan Ranfurly, became well known for his exploits in the Second World War, and also served as Governor of the Bahamas from 1953 to 1956.

His wife Hermione, Countess of Ranfurly, also became well known for her memoirs of her and her husband's lives during the Second World War, and for establishing the organisation which is now known as Book Aid International.

Despite its territorial designation and the fact that it is in the Peerage of Ireland, the name of the earldom (like that of the UK barony) references the village of Ranfurly (Scottish Gaelic: Rann Feòirling) in Renfrewshire in the south-west of Scotland.

The Earls of Ranfurly owned a large country estate centred on Dungannon in the south-east of County Tyrone in Ulster, Ireland, from 1692[5][6] until the very early twentieth-century.

[7] The family seat is Maltings Chase, a house designed by Ted Cullinan and built in the late 1960s, near Nayland, Suffolk.