HNLMS Willem van Ewijck was a Jan van Amstel-class minesweeper of the Royal Netherlands Navy.

The Jan van Amstel-class ships were 55.8 metres (183 ft 1 in) long, with a beam of 7.8 metres (25 ft 7 in) and a draught of 2.2 metres (7 ft 3 in) at deep load. They displaced was 450 long tons (460 t) at normal load, which increased to 585 long tons (594 t) at deep load. A pair of Yarrow boilers fed steam to two triple-expansion steam engines that each drove a single propeller shaft. The engines were rated at 1,690 indicated horsepower (1,260 kW) which gave the ships a speed of 15 knots (28 km/h; 17 mph). They carried up to 110 long tons (110 t) of fuel oil and had a complement of 45 officers and ratings.^[1]

Willem van Ewijck was sunk on 8 September 1939 after hitting a mine off Terschelling. The ship was assisting in minelaying and hit a dutch mine while doing so. Thirty-three of the crew were killed.^[2]

• Roberts, John (1980). "The Netherlands". In Chesneau, Roger (ed.). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. pp. 385–396. ISBN 0-85177-146-7.
• van Willigenburg, Henk (2010). Dutch Warships of World War II. Emmen: Lanasta. ISBN 978-90-8616-318-2.