The Ploegsteert Memorial to the Missing is a Commonwealth War Graves Commission (CWGC) memorial in Belgium for missing soldiers of World War I.It commemorates men from the Allied Powers who fought on the northern Western Front outside the Ypres Salient and whose graves are unknown.

The memorial is located in the village of Ploegsteert and stands in the middle of Berks Cemetery Extension.

After Ploegsteert Wood (referred to colloquially as "Plug Street") had been the site of fierce fighting at the start of the war, it became a relatively quiet sector where no major action took place.

Allied units were sent here to recuperate and retrain after fighting elsewhere and before returning to active operations.

[1] The cemetery grounds were assigned to the United Kingdom in perpetuity by King Albert I of Belgium in recognition of the sacrifices made by the British Empire in the defence and liberation of Belgium during the war.