The title of Earl of St Germans was created in the Peerage of the United Kingdom in 1815.

Lord St Germans bears the subsidiary title of Baron Eliot, of St Germans in the County of Cornwall (1784) in the Peerage of Great Britain, which has been customarily used as a courtesy title by his eldest son.

The title takes its name from St Germans in Cornwall.

Earls of Saint Germans (1815)

• John Eliot, 1st Earl of St Germans (30 September 1761 - 17 November 1823)
• William Eliot, 2nd Earl of St Germans (1 April 1767 - 10 January 1845)
• Edward Granville Eliot, 3rd Earl of St Germans (29 August 1798 - 7 October 1877)
• William Gordon Cornwallis Eliot, 4th Earl of St Germans (14 December 1829 - 19 March 1881)
• Henry Cornwallis Eliot, 5th Earl of St Germans (11 February 1835 _ 24 September 1911)
• John Granville Cornwallis Eliot, 6th Earl of St Germans (11 June 1890 - 31 March 1922)
• Granville John Eliot, 7th Earl of St Germans (22 September 1867 _ 20 November 1942)
• Montague Charles Eliot, 8th Earl of St Germans (13 May 1870 - 19 September 1960)
• Nicholas Richard Michael Eliot, 9th Earl of St Germans (26 January 1914 - 11 March 1988)
• Peregrine Nicholas Eliot, 10th Earl of St Germans (2 January 1941 -)

Heir Apparent: Jago Nicholas Aldo Eliot, Lord Eliot