HNLMS Marten Harpertszoon Tromp () was a unique coastal defence ship of the Royal Netherlands Navy built by the Rijkswerf in Amsterdam.
The ship was long, had a beam of , a draught of , and had a displacement of 5,210 ton. The ship was equipped with 2 shaft reciprocating engines, which were rated at and produced a top speed of .
The ship had a belt armour of , barbette armour and turret armour.
The main armament of the ships were two single turret guns. Secondary armament included four single guns and eight single guns.
Tromp was launched on 15 June 1904 at the Rijkswerf in Amsterdam. On 5 April 1906 she was commissioned by Captain Koster as the first commander of the ship. The same year on 25 June she made a visit to Norway for an official visit to the ship by Haakon VII of Norway.
10 August 1909 Tromp together with and departed from Batavia to China, Hong Kong, Japan and the Philippines to show the flag.
On 2 March 1920 she and departed from Den Helder for a four month journey to Asia to show the flag. They visited the ports of Singapore, Saigon, Hong Kong, Shanghai, Kobe and Manila.
On 17 November 1923, the Dutch cargo ship put into port at Bastia, Corsica, France, on fire. Marten Harpertszoon Tromp scuttled the burning ship.
From 21 June to 30 July 1926 the ship together with , torpedo boats Z 7 and Z 8 and submarines and departed from Den Helder to the Baltic. During the trip they visited the ports of Kiel, Gothenburg and Trondheim.
The ship was decommissioned in 1927.