Lord Claud Nigel Hamilton, GCVO, CMG, DSO (10 November 1889–2 August 1975) was a British soldier and courtier. Lord Claud was the youngest son of James Hamilton, 2nd Duke of Abercorn and was educated at Wellington College. In 1907, he joined the 3rd Battalion (Lothian Regiment) of the Scots Guards as a Second Lieutenant and transferred to the Grenadier Guards in 1909. In 1908, he was promoted to Captain and during World War I, was mentioned in despatches in 1914 for having "commanded a machine-gun for five days and nights without relief" and made a Companion of the Distinguished Service Order. In 1916, he was made an MVO and in 1918, an Officer of the Order of the Crown of Italy and awarded the Croix de guerre. A year later, he was employed as an equerry to Edward, Prince of Wales and made