Lieutenant-General William Stuart, CB (1778–1837) was a British Army officer who fought in the Napoleonic Wars.

He was the third son of Alexander Stuart, 10th Lord Blantyre and Catharine, eldest daughter and heiress of Patrick Lindsay of Eaglescairnie, Haddingtonshire.

In 1799 he accompanied the Battalion in the Anglo-Russian invasion of Holland, and was present in the actions of the 27 August, on 10, 19 September and 2 October.

[1] Stuart afterwards served in the Peninsular War and received a medal for the Battle of the Nive.

[4] Stuart died unmarried at Erskine House, Renfrewshire, aged 58 on 15 February 1837.