Simon Luttrell, 1st Earl of Carhampton (1713 – 14 January 1787) was a British politician and Irish nobleman.

He was the second son of Col. Henry Luttrell, of Luttrellstown (whose family had held Luttrellstown since the land there had been granted to Sir Geoffrey de Luterel in about 1210 by King John of England). He was created Baron Irnham of Luttrellstown on 13 October 1768, 1st Viscount Carhampton on 9 January 1781 and 1st Earl of Carhampton on 23 June 1785.

He was Member of Parliament for four different constituencies:

• Mitchell 1755-1761
• Wigan 1761-1768
• Weobley 1768-1774
• Stockbridge 1774-1780

He lived at Four Oaks Hall, Four Oaks, Sutton Coldfield from 1751 to 1766.

He married Judith Maria Lawes in 1737, by whom he had eight children:

• Henry Luttrell, 2nd Earl of Carhampton (1743–1821)
• John Luttrell-Olmius, 3rd Earl of Carhampton (d. 1829)
• Temple Simon Luttrell (c.1738–1803)
• James Luttrell (c.1751–1788)
• Anne Luttrell (c.1752–1808), married first in 1765 Christopher Horton, married second in 1771 Prince Henry, Duke of Cumberland and Strathearn
• Lucy Luttrell
• son, name unknown
• Elizabeth Luttrell

His rakish behaviour earned him the nickname "King of Hell" and he is reputed to have started the courtesan Mary Nesbitt in her career by seducing her.