The Hon. Eliot Constantine Yorke DL (13 July 1843 – 21 December 1878), was a British politician and courtier.
Yorke was the fourth son of Admiral Charles Philip Yorke, 4th Earl of Hardwicke, and the Hon. Susan, daughter of Thomas Liddell, 1st Baron Ravensworth.
Yorke was returned to Parliament as one of three representatives for Cambridgeshire in 1874 (succeeding his elder brother Lord Royston), a seat he held until his early death four years later. He was also a Captain in the Cambridgeshire Militia, an Equerry to His Royal Highness the Duke of Edinburgh and a Deputy Lieutenant of Cambridgeshire.
On 11 February 1873, Yorke married Annie, daughter of Sir Anthony de Rothschild, 1st Baronet, at St. Andrew's Parish Church, Wimpole, Cambridgeshire. They had no children. On 21 December 1878, he died at 17 Curzon Street, Mayfair, London, aged 35. His wife survived him by almost 50 years and died on 21 November 1926, at "Hamble Clife," Southampton, Hampshire.