Edward Granville Eliot, 3rd Earl of St Germans (29 August 1798 - 7 October 1877) was a British politician.

He was born in Plymouth, Devon, on August 29 1798 to William Eliot, 2nd Earl of St Germans (April 1 1767 - January 19 1845) and his first wife, Georgina Augusta Leveson-Gower (April 13 1769 - March 24 1806). He was educated at Westminster School from 1809 - 1811, and matriculated at Christ Church, Oxford on 13 December 1815.

He became the Secretary of Legation at Madrid on 21 November 1821. He was styled Lord Eliot in 1823 and became Member of Parliament for Liskeard the following year. Beginning his career as a Tory, he remained loyal to Robert Peel, and served as

• Lord of the Treasury from 1827 - 1830
• Envoy Extra to Spain 1834 - 1835 ( concluding the Eliot Convention on 27 April 1835 )
• Member of Parliament for East Cornwall 1837 - 1845
• Chief Secretary for Ireland September 1841 - January 1845
• Privy Councillor (GB) 3 September 1841
• Privy Councillor (Ireland) 12 October 1841
• DL 1841
• LL.D (Dublin) 1843
• Postmaster-General December 1845 - June 1846
• CB 27 April 1848
• Special Deputy Warden of the Stannaries October 1852
• Lord Lieutenant of Ireland 5 January 1853 - March 1855 in Lord Aberdeen's coalition government
• GCB 24 January 1857
• Lord Steward of the Household November 1857 - February 1858 and June 1859 - January 1866

In 1860, he accompanied the Prince of Wales on his tour of Canada and the USA.

On September 2 1824 Edward Granville Eliot married Jemima Cornwallis (December 24 1803 - July 2 1856) at St James Church, Westminster. They had six sons and two daughters:

• Louisa Susan Cornwallis Eliot (December 17 1825 - January 15 1911)
• Edward John Cornwallis Eliot (April 2 1827 - november 26 1864)
• Granville Charles Cornwallis Eliot (September 9 1828 - November 5 1854)
• William Gordon Cornwallis Eliot, 4th Earl of St Germans (December 14 1829 - March 19 1881)
• Ernest Cornwallis Eliot (April 28 1831 - January 23 1832)
• Elizabeth Harriet Cornwallis Eliot (September 1833 - March 16 1835)
• Henry Cornwallis Eliot, 5th Earl of St Germans (February 11 1835 - September 24 1911)
• Charles George Cornwallis Eliot (October 16 1839 - May 22 1901)

|- style="text-align: center;" | width="30%" |Preceded by:
The Earl of Lonsdale | width="40%" style="text-align: center;" |Postmaster General
1845–1846 | width="30%" |Succeeded by:
The Marquess of Clanricarde

|- style="text-align: center;" | width="30%" |Preceded by:
The Earl of Eglinton | width="40%" style="text-align: center;" |Lord Lieutenant of Ireland
1853–1855 | width="30%" |Succeeded by:
The Earl of Carlisle

|- style="text-align: center;" | width="30%" |Preceded by:
The Earl Spencer | width="40%" style="text-align: center;" |Lord Steward
1857–1858 | width="30%" |Succeeded by:
The Marquess of Exeter

|- style="text-align: center;" | width="30%" |Preceded by:
The Marquess of Exeter | width="40%" style="text-align: center;" |Lord Steward
1859–1866 | width="30%" |Succeeded by:
The Earl of Bessborough