HMS Galatea, after the Galatea of mythology, has been the name of eight ships in the British Royal Navy.
- was a 20-gun sixth-rate post-ship launched in 1776 and broken up in 1783.
- was a 32-gun fifth rate launched in 1794 and broken up 1809.
- was a 36-gun fifth rate launched in 1810, a coal hulk after 1836, and broken up 1849.
- was a wooden screw frigate launched in 1859 and broken up 1883. In 1866 she went on a world cruise, under the command of the Prince Alfred, Duke of Edinburgh.
- was an first-class cruiser built in Glasgow, and launched on 10 March 1887 and sold for scrapping on 5 April 1905.
- was an light cruiser launched on 14 May 1914 at William Beardmore and Company shipyard and sold 1921.
- was a light cruiser of (another) , launched on 9 August 1934 at Scotts shipyard in Greenock, Scotland, torpedoed and sunk in the Mediterranean on 14 December 1941 with the loss of most of her crew.
- was a RNVR stone frigate in Kingston upon Hull decommissioned in 1958.
- was a built in 1963 and expended as a target in 1988.