| Honorific-Prefix: | The Right Honourable |
| The Earl of Hardwicke | |
| Honorific-Suffix: | KG PC FRS |
| Order1: | Lord Lieutenant of Ireland |
| Term Start1: | 27 April 1801 |
| Term End1: | 21 November 1805 |
| Monarch1: | George III |
| Predecessor1: | The Marquess Cornwallis |
| Successor1: | The Earl of Powis |
| Office2: | Member of Parliament for Cambridgeshire |
| Term Start2: | 1780 |
| Term End2: | 1790 |
| Predecessor2: | Sir John Hynde Cotton, Bt |
| Successor2: | Charles Philip Yorke |
| Birth Date: | 1757 5, df=yes |
| Birth Place: | Cambridge, Cambridgeshire |
| Nationality: | British |
| Alma Mater: | Queens' College, Cambridge |
Philip Yorke, 3rd Earl of Hardwicke, KG, PC, FRS (31 May 1757 – 18 November 1834), known as Philip Yorke until 1790, was a British politician.
Born in Cambridge, England, he was the eldest son of Charles Yorke, Lord Chancellor, by his first wife, Catherine Freman. He was educated at Harrow and Queens' College, Cambridge.
On 31 January 1788 his uncle Philip Yorke, 2nd Earl of Hardwicke, as Lord Lieutenant of Cambridgeshire, appointed him as Colonel of the Cambridgeshire Militia, a command which he held for many years, even after he had become Lord Lieutenant himself.[1] [2]
In 1790 he succeeded his uncle to his earldom and estates, including Wimpole Hall.
Hardwicke was Member of Parliament for Cambridgeshire from 1780 to 1790, following the Whig traditions of his family, but after his succession to the earldom in 1790 he supported William Pitt The Younger, and took office in 1801 as Lord Lieutenant of Ireland (1801–1806), where he supported Catholic emancipation. He was sworn of the Privy Council in 1801, created a Knight of the Garter in 1803, and was a fellow of the Royal Society.
Lord Hardwicke married Lady Elizabeth, daughter of James Lindsay, 5th Earl of Balcarres, in 1782. They had four sons and four daughters.
Lord Hardwicke died on 18 Nov 1834, aged 77, and was buried St Andrew's Church in Wimpole, Cambridgeshire, in a tomb by Richard Westmacott the Younger. As he had no surviving male issue, he was succeeded in the earldom by his nephew Charles. Lady Hardwicke died on 26 May 1858, aged 94.
Memoirs of the Court and Cabinets of George III. 4 vols. London, 1853–1855