Eighteen ships of the Royal Navy have borne the name HMS Mercury, or HMS Mercure, after the God Mercury, of Roman mythology:
HMS Mercury was a 6-gun galley launched in 1592 and sold in 1611.
HMS Mercury was a ship launched in 1620. Her fate is unknown.
HMS Mercury was a ship purchased in 1622. Her fate is unknown.
HMS Mercury was a 6-gun advice boat launched in 1694 and captured by a French privateer in 1697.
HMS Mercury was an 8-gun fireship purchased in 1739 and foundered in 1744.
HMS Mercury was a 16-gun brigantine launched in 1744 and captured in 1745.
HMS Mercury was a 24-gun sixth rate launched in 1745 and broken up in 1753.
HMS Mercury was a 20-gun sixth rate launched in 1756 and wrecked in 1777.
HMS Mercury was a 28-gun sixth rate launched in 1779 and broken up in 1814.
HMS Mercure was an 18-gun sloop. She was formerly a French privateer that Phaeton and Anson captured in 1798. She was renamed HMS Trompeuse in 1799 and foundered in 1800.
HMS Mercury was a 14-gun brig launched in 1806 and converted to a coal hulk by 1865.
HMS Mercury was a tender launched in 1807 and broken up in 1835.
HMS Mercury was a 46-gun fifth rate launched in 1826, used as a coal hulk from 1861 and sold in 1906.
HMS Mercury was a cutter tender launched in 1837, renamed YC6 in 1866, HMS Plymouth in 1876 and was sold in 1904.
HMS Mercury was an Iris class cruiser and despatch vessel launched in 1878, converted to a depot ship in 1906 and sold in 1919. She was to have been named HMS Columbine in 1912, but this did not happen.
HMS Mercury was an auxiliary minesweeper sunk during World War I.
HMS Mercury was a paddle steamer requisition during World War II for use as an auxiliary minesweeper which struck a mine and sank in 1940.
HMS Mercury was a Royal Naval Communications/Signal School located at the site of Leydene House near Petersfield, England. The establishment was in commission between 1941 and 1993.
