The sixth HMS Monmouth was the name-ship of the Monmouth-class of armoured cruiser of 9,800 tons displacement, of the British Royal Navy. Built in 1901, with her heaviest gun being fourteen 6-inch quick-firers, she had a weak armament for armoured cruiser. She served on the China Station between 1906 and 1913, before being put in the Reserve Fleet in January 1914.

On the outbreak of the First World War she was remobilised and sent to the 5th Cruiser Squadron of Admiral Sir Christopher Cradock. She participated in the Battle of Coronel and was sunk by SMS Nürnberg with all hands.


The seventh and current HMS Monmouth is a Type 23 Duke-class frigate, built at Yarrow Shipbuilders on the river Clyde, and launched on 23 November 1991.