Edward Arthur Henry Pakenham, 6th Earl of Longford (29 December 1902 – 5 February 1961) was an Irish peer, politician, and littérateur.

He was known by the courtesy title Lord Silchester from birth until 1915 and 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.

He was educated at Eton (where he twice received the Wilder Divinity Prize) and at Christ Church, Oxford from which he graduated with a BA in 1925, later promoted to MA in 1928.

On 7 November 1946, he was nominated by the Taoiseach, Éamon de Valera as a member of 5th Seanad, filling a vacancy caused by the death of William Magennis.

Pakenham Hall was often the scene of gatherings of Oxford-educated intellectuals such as John Betjeman, Evelyn Waugh, and Maurice Bowra.