HNLMS De Ruyter (Dutch: Hr.Ms. De Ruyter) was a unique light cruiser of the Royal Netherlands Navy. She was originally designed as a 5,000-long-ton (5,100 t) ship with a lighter armament due to financial problems and the pacifist movement. Later in the design stage, an extra gun turret was added and the armor was improved. She was the seventh ship of the Dutch Navy to be named after Admiral Michiel Adriaenszoon de Ruyter. De Ruyter was laid down on 16 September 1933 at the Wilton-Fijenoord dockyard in Schiedam and commissioned on 3 October 1936, commanded by Captain A. C. van der Sande Lacoste. She was sunk in the Battle of the Java Sea in 1942.