Hertog Hendrik) was a Koningin Regentes-class coastal defence ship (pantserschip) of the Royal Netherlands Navy.

The ship took part in two expeditions to South Celebes and during the Spanish Civil War she performed convoy duties.

The ship was equipped with 2-shaft reciprocating engines, which were rated at 4,800 kW (6,500 ihp) and produced a top speed of 16.5 knots (30.6 km/h).

[1] Hertog Hendrik was laid down on 8 March 1901 by the Dutch Queen Mother, Emma of Waldeck and Pyrmont at the Rijkswerf in Amsterdam.

[3] On 24 June 1905 Hertog Hendrik hit a coral reef near Matjidosteen while en route to the Gulf of Boni.

Armed sloops of Hertog Hendrik, Zeeland and Assahan protected the landing of Dutch forces near Patiro on 20 July 1905.

After leaving Surabaya on 15 August 1910, Hertog Hendrik and both her sister ships, De Ruyter and Koningin Regentes, visited the ports of Brisbane, Melbourne, Sydney, Fremantle and several others.

[5] Hertog Hendrik and Noordam deployed as auxiliary cruiser left the Netherlands on 16 February 1918 as convoy to the Dutch East Indies.

On 5 July that year a second attempt was made to reach the Dutch East Indies by going around Scotland and Cape of Good Hope.

[6] On 2 March 1920 she and Marten Harpertszoon Tromp departed from Den Helder for a four-month journey to Asia to show the flag.