Colonel Michael Guy Percival Willoughby, 11th Baron Middleton KG MC KStJ TD ED (21 October 1887 – 16 November 1970) was a British peer and soldier.
Graduating from the Royal Military College on 9 October 1907, Willoughby was commissioned a second lieutenant in the South Lancashire Regiment (The Prince of Wales's Volunteers).
In July 1916 he was attached to the 12th Cavalry until August when he returned to India to take over the 10th Duke of Cambridge's Own Lancers (Hodson's Horse) depot at Multan, that regiment now being selected for active service.
For his service in Mesopotamia he was awarded the Military Cross[1] and was mentioned in dispatches three times (The London Gazette 5 April 1916,[2] 19 October 1916[3] and 12 June 1917[4]).
While at Multan he led two scratch squadrons of the regiment on the Marri punitive expedition between March and April 1918 and appointed acting major commanding the depot 28 January to 12 August 1918.