HMS Royal Oak was one of seven Royal Sovereign-class pre-dreadnought battleships built for the Royal Navy during the 1890s. Upon her completion in 1894, she was initially placed in reserve until mobilised in 1896 for service with the Flying Squadron. After returning briefly to reserve, the ship was assigned the following year to the Mediterranean Fleet. Royal Oak remained there until 1902 when she returned home; after a refit, the ship was assigned to the Home Fleet, where she served as the flagship of the fleet's second-in-command in 1904–05. Royal Oak was then reduced to reserve until she was taken out of service in 1911. The ship was sold for scrap in early 1914.

The Royal Sovereign class was a group of eight pre-dreadnought battleships built for the Royal Navy in the 1890s. The ships spent their careers in the Mediterranean, Home and Channel Fleets, sometimes as flagships, although several were mobilised for service with the Flying Squadron in 1896 when tensions with the German Empire were high following the Jameson Raid in South Africa. Three ships were assigned to the International Squadron formed when Greek Christians rebelled against the Ottoman Empire's rule in Crete in 1897–1898.