Francis Aungier, 1st Earl of Longford

Francis Aungier, 1st Earl of Longford PC (Ire) (ca. 163223 December 1700) was an English politician, who sat in the House of Commons from 1660 to 1679. He was an administrator in Ireland.

Aungier was the eldest son of Ambrose Aungier, Chancellor of St Patrick's Cathedral, Dublin 1636-1654, and his wife Grizzell Bulkeley, daughter of Lancelot Bulkeley, Archbishop of Dublin 1619-1650. The Aungier family originated from Cambridgeshire, but his grandfather married into the family of the Fitzgerald Earls of Kildare in 1584, and was appointed Master of the Rolls in Ireland in 1609, after which he became settled in Ireland. Aungier inherited the Barony on the death of his uncle, Gerald Aungier, 2nd Baron Aungier of Longford, in 1655.

Aungier inherited some property in Surrey, and in 1660, he was elected Member of Parliament for Surrey in the Convention Parliament.

Aungier married firstly Jane Carr, daughter of Sir Edward Carr of Hillingdon and secondly Anne daughter of Arthur Chichester, 1st Earl of Donegall and widow of John Butler, 1st Earl of Gowran. He had no children and was succeeded by special remainder in his titles by his brother Ambrose, who died in 1705, and with whom the earldom of Longford became extinct.