John Darcy, 1st Baron Darcy de Knayth

John Darcy, 1st Baron Darcy de Knayth (c. 1290–1347), was an English peer and a trusted councillor of Edward III. Summoned to the barony in 1332, he served three terms as chief governor of Ireland from 1323 onward, and in 1324 presided over the witchcraft trial of Alice Kyteler.

He was the king's steward (1337–1340) and chamberlain (1342–1346), constable of the Tower of London, and fought at Crécy in 1346, carrying news of the victory back to Parliament. He died in 1347.