Sir Audley Mervyn of Trillick (1603?–1675) was a lawyer and politician in seventeenth-century Ireland. He was MP for County Tyrone and Speaker of the Irish House of Commons 1661-1666. He was the second son of Sir Henry Mervyn of Petersfield, Hampshire, who married his cousin Lady Christian Tuchet, daughter of George Tuchet, 1st Earl of Castlehaven and his wife Lucy Mervyn, only daughter of Sir James Mervyn of Fonthill Gifford and his first wife Amy Clarke.