William Aislabie (1700 – 17 May 1781) of Studley Royal, North Yorkshire was an English landowner and Tory politician who sat in the House of Commons for over 60 years from 1721 to 1781. His long unbroken service in the House of Commons was only surpassed, more than 100 years after his death, by the 63 years achieved by Charles Pelham Villiers at Wolverhampton.