The Nieuport Memorial is a First World War memorial, located in the Belgian port city of Nieuwpoort (), which is at the mouth of the River Yser. The memorial lists 547 names of British officers and men with no known grave who were killed in the Siege of Antwerp in 1914 or in the defence of this part of the Western Front from June to November 1917. Those that fought in 1914 were members of the Royal Naval Division. The fighting in 1917, when XV Corps defended the line from Sint-Joris to the sea, included the German use of chemical weapons such as mustard gas and Blue Cross.