The Dunkirk evacuation, codenamed Operation Dynamo and also known as the Miracle of Dunkirk, or just Dunkirk, was the evacuation of more than 338,000 Allied soldiers during the Second World War from the beaches and harbour of Dunkirk, in the north of France, between 26 May and 4 June 1940. The operation commenced after large numbers of Belgian, British, and French troops were cut off and surrounded by German troops during the six-week Battle of France.

Dunkirk is a commune in the department of Nord in northern France. It lies 10 kilometres (6.2 mi) from the Belgian border. It has the third-largest French harbour. The population of the commune in 2019 was 86,279.