Edmund de Clay was an English-born lawyer and judge who served as Lord Chief Justice of Ireland and Chief Justice of the Irish Common Pleas.
He was born in Nottinghamshire, and later became a landowner there. By 1383, he was regarded as a man who was "learned in the law" and in that year he became Serjeant-at-law. He is known to have been reluctant to take up this office, probably because it would involve him in heavy expenses, and he did so only after King Richard II issued a warrant commanding de Clay, along with two other leading advocates, John Hill and Sir John Cary, to be admitted to that rank by a specified day.
In 1385 he was sent to Ireland with a large retinue to take up office as Lord Chief Justice of the Common Pleas. He was transferred to the more senior office of Lord Chief Justice of Ireland in 1386. He had returned to England and was living on his estates in Nottinghamshire by 1389; later he is recorded as sitting on a commission of oyer and terminer. His date of death is not recorded,