Five ships of the Royal Navy have been named HMS Blenheim, after the Battle of Blenheim in 1704. The name was chosen for a sixth ship, but was not used.
HMS Blenheim was a 90-gun second rate launched in 1679 as . She was renamed HMS Princess Anne in 1701, HMS Windsor Castle in 1702, and HMS Blenheim in 1706. She was broken up in 1763. was a 90-gun second rate launched in 1761, reduced to a third rate in 1800 and wrecked in 1807. HMS Blenheim was the name the Navy initially selected for the Danish , captured in 1807, but the name was not used. was a 74-gun third rate launched in 1813. She was reduced to harbour service in 1831, converted to screw propulsion in 1847 and was broken up in 1865. was a armoured cruiser launched in 1890, used as a depot ship from 1907 and scrapped in 1926. was a depot ship, previously SS Achilles. She was purchased in 1940 and scrapped in 1948.