HMS Intrepid was an Apollo-class protected cruiser of the Royal Navy built on the River Clyde and launched in 1891. She was subsequently converted as a minelayer in the latter half of her career and ultimately sunk as a blockship during the Zeebrugge Raid on 23 April 1918.

A blockship is a ship deliberately sunk to prevent a river, channel, or canal from being used as a waterway. It may either be sunk by a navy defending the waterway to prevent the ingress of attacking enemy forces, as in the case of HMS Hood at Portland Harbour in 1914; or it may be brought by enemy raiders and used to prevent the waterway from being used by the defending forces, as in the case of the three old cruisers HMS Thetis, Iphigenia and Intrepid scuttled during the Zeebrugge raid in 1918 to prevent the port from being used by the German navy.