|Career (Great Britain)
||13 December 1758
||19 May 1761
||Burnt, 30 June 1780
|General characteristics 
|Class and type:
||Arrogant class ship of the line
||168 ft (51 m) (gundeck)
||46 ft 9 in (14.25 m)
|Depth of hold:
||19 ft 9 in (6.02 m)
||Full rigged ship
- Gundeck: 28 × 32 pdrs
- Upper gundeck: 28 × 18 pdrs
- Quarterdeck: 14 × 9 pdrs
- Forecastle: 4 × 9 pdrs
HMS Cornwall was a 74-gun third-rate ship of the line of the Royal Navy, launched on 19 May 1761 at Deptford.
She served in the English Channel until the end of the Seven Years' War in 1763. After service as a guard-ship at Plymouth, she was sent to North America to serve in the American Revolutionary War. She arrived in New York on 30 July 1779 and just ten days later was in a confrontation with the French Navy. Later that year she was deployed to the West Indies where she was badly damaged in action off Grenada and again off Martinique in 1780. She was sent to St Lucia for urgent repairs, but her damage was impossible to repair due to it being too extensive.
Cornwall was deemed unserviceable and burned on 30 June 1780.
- ^ a b c Lavery, Ships of the Line vol. 1, p. 176.
- ^ Ships of the Old Navy, Cornwall.
- Lavery, Brian (2003) The Ship of the Line - Volume 1: The development of the battlefleet 1650-1850. Conway Maritime Press. ISBN 0-85177-252-8.
- Michael Phillips. Cornwall (74) (1761). Michael Phillips' Ships of the Old Navy. Retrieved 1 September 2008.