Sir William Robert Clayton, 5th Baronet (28 August 1786 – 19 September 1866) was an English Army officer and politician.
[1] He was the eldest son of Sir William Clayton, 4th Baronet of Harleyford, near Great Marlow, Buckinghamshire and educated at Eton college.
He joined the Army as an Ensign in the 10th Foot in 1804 and transferred as a lieutenant to the Royal Horse Guards in 1805, rising to captain in 1809.
In 1812 he went with the Horse Guards to the Peninsular War and the following year took part in the battles of Vitoria, the Pyrenees and Pamplona.
His sons both predeceased him and he was therefore succeeded in the baronetcy and settled estates by his grandson William Robert Clayton (1842–1914).