Edward Arthur Henry Pakenham, 6th Earl of Longford (29 December 1902 – 4 February 1961) was an Irish peer, politician, and littérateur. Also known as Eamon de Longphort, he was a member of the fifth Seanad Éireann, the upper house of the Irish Parliament, in the 1940s.
Edward Longford was the elder son of Thomas Pakenham, 5th Earl of Longford and Mary, Countess of Longford, née Child-Villiers. He was the only one of the Pakenham children on whom his mother doted, apparently because he would succeed to the earldom on his father's death and because he was always in delicate health.
As a pupil at Eton College (where he twice received the Wilder Divinity Prize) he succeeded to the earldom when his father was killed in action at the Battle of Gallipoli on 21 August 1915.
He became an undergraduate at Christ Church, Oxford and met his future wife, Christine Patti Trew, an Oxford "undergraduette". They were married on 18 July 1925. He died without issue and was succeeded by his younger brother Frank.
He was an Irish Nationalist since his days at Eton, taking inspiration from the Easter Rising in 1916 and the Russian Revolution of 1917. He learned Irish and adopted the name Eamon de Longphort. His political views made him unpopular at both Eton and Christ Church, where he was famously put in "Mercury", the pond containing a statue of Mercury in Tom Quad.