General Cyrus Trapaud (18 August 1715 – 3 May 1801) was a British Army officer.
He served in the Buffs (Royal East Kent Regiment), accompanying the regiment to the Netherlands in 1742. As an ensign at the Battle of Dettingen, 1743, he reputedly saved the life of King George II, whose horse had bolted, and received a promotion as a reward. Trapaud was also present at the battles of Battle of Fontenoy, Falkirk and Culloden.
In 1760, Trapaud was made a colonel in the 70th Regiment of Foot; he was promoted to major general in 1762, lieutenant general in 1772, and full general in 1783. He was Colonel of the 70th regiment from 1760 to 1778,  when he was transferred as Colonel to the 52nd (Oxfordshire) Regiment of Foot. 
Trapaud was married to Catherine Plaistow, daughter of General Plaistow, in 1751. Her portrait was also painted by Sir Joshua Reynolds. Copies of these, by Edward Fisher, are held by the National Portrait Gallery. Trapaud's brother was deputy Governor of Fort Augustus.
- Queen's Royal Surreys
- "Trapaud.org". Archived from the original on 6 June 2008. Retrieved 29 May 2008.
- Historical Records of the British Army (Infantry), 1861
- "70th (Surrey) Regiment of Foot". regiments.org. Archived from the original on 13 January 2008. Retrieved 16 July 2016.CS1 maint: BOT: original-url status unknown (link)
- Light Infantry.org[permanent dead link]
- Lee, Sidney, ed. (1894). . Dictionary of National Biography. 38. London: Smith, Elder & Co. p. 368.
- National Portrait Gallery
- James Boswell, The Journal of a Tour to the Hebrides with Samuel Johnson
Sir John Clavering
| Colonel of the 52nd (Oxfordshire) Regiment of Foot
Sir John Moore
| Colonel of the 70th (Glasgow Lowland) Regiment of Foot