Seven Royal Navy ships have been named HMS Duncan, after Admiral Adam Duncan, 1st Viscount Duncan of Camperdown, hero of the Battle of Camperdown.
- HMS Duncan (1804) was the mercantile Carron, launched at Bombay Dockyard in 1792. She made three voyages from India to Britain for the British East India Company between 4 November 1795 and 17 June 1801. The Royal Navy purchased her in 1804 for service as a fifth rate and renamed her HMS Dover in 1807. She was wrecked off Madras in 1811.[1]
- HMS Duncan (1811) was a 74-gun third-rate launched in 1811, reduced to harbour service in 1826, and broken up 1863.
- HMS Duncan (1859) was a 101-gun screw-propelled first-rate launched in 1859, employed on harbour service as HMS Pembroke in 1890, renamed HMS Tenedos in 1905, and sold in 1910.
- HMS Duncan (1901), launched in 1901, was a Duncan-class battleship that saw action against German installations on the Belgian coast in World War I and was sold in 1920.
- HMS Duncan (D99) was a D-class destroyer, launched in 1932 and scrapped in 1945.
- HMS Duncan (F80) was a Type 14 Blackwood-class frigate, launched in 1957 and in service from 1958 to 1985.
- HMS Duncan (D37) is a Type 45 destroyer launched on 11 October 2010.
- ^ Hackman (2001), p.227.