Baron Middleton, of Middleton in the County of Warwick, is a title in the Peerage of Great Britain, created in December 1711 for Sir Thomas Willoughby, 2nd Baronet, who had previously represented Nottinghamshire and Newark in Parliament.

It was one of twelve new peerages created together and known as Harley's Dozen, to give a Tory majority in the House of Lords.

Their father, the landowner and naturalist Francis Willughby (1635–1672), of Middleton Hall, Warwickshire, had died when they were both small children.

[3][4] The first Lord Middleton was followed by his eldest son, the second Baron (1692–1758), who had previously sat as one of the Members of Parliament for Nottinghamshire and Tamworth.

[5] The heir apparent is the present holder's eldest son, the Hon James William Michael Willoughby (b.