HMS Grenade (H86) was a G-class destroyer built for the Royal Navy during the 1930s. She was transferred from the Mediterranean Fleet shortly after the beginning of World War II for service in home waters. The ship participated in the early stages of the Norwegian Campaign in April 1940. German Junkers Ju 87 Stuka dive bombers sank Grenade as she evacuated Allied troops during Operation Dynamo on 29 May 1940.

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.