The title of Marquess of Ailesbury is a British noble title created in 1784. It is part of the Peerage of the United Kingdom and is associated with the Ailesbury estate in Buckinghamshire. The title was first granted to Henry Thomas Bruce, who was a prominent landowner and politician. The Marquesses of Ailesbury have played significant roles in British history, particularly in the 19th century. The family has been involved in various political and social activities, contributing to the development of their local community and the nation. The current holder of the title is the 8th Marquess, Charles Bruce.