Operation Alphabet was an evacuation, authorised on 24 May 1940, of Allied (British, French and Polish) troops from the harbour of Narvik in northern Norway marking the success of Operation Weserübung (the German invasion of 9 April) and the end of the Allied campaign in Norway during World War II.

The evacuation was prompted by the Wehrmacht's assault on Belgium, the Netherlands, Luxembourg and France in the spring of 1940, which reduced the relative importance of Germany's iron ore provision and of Scandinavia.

The Royal Navy wanted to discipline Dalzel-Job but was unable to, after King Haakon VII awarded him the Knights Cross of the Order of Saint Olav (First Class).

A consequence of the evacuation of Allied troops from Norway was that Sweden's and Finland's position vis-à-vis Nazi Germany was weakened.

Nazi Germany and the Soviet Union, still united by the Molotov–Ribbentrop Pact, had excluded other international powers from influence in Northern Europe.