Eleven ships of the Royal Navy and a reserve shore establishment of the Canadian Navy have borne the name HMS/HMCS Discovery, while ships of other branches have also used the name:
HMS Discovery (1774) was an 8-gun discovery vessel launched in 1774 as the civilian collierDiligence. She was acquired in 1775, and accompanied HMS Resolution on Captain James Cook's third voyage of exploration from 1776 to 1780. She became a dockyard transport in 1781 and was broken up in 1797.
HMS Discovery (1789) was a 10-gun sloop launched and purchased in 1789. She was commanded by Captain George Vancouver on his voyage of exploration from 1791 to 1795. She was converted to a bomb vessel in 1799, a convict ship in 1818 and was broken up in 1834.
HMS Discovery was a purpose-built survey ship launched in 1901. She was commanded by Captain Robert Falcon Scott during the Discovery Expedition to the Antarctic in 1901, and was sold in 1905. She was re-designated RRS (Royal Research Ship) Discovery in 1923, repurchased in 1929 as a training ship, and was handed over for preserving as a museum ship in 1979.