Convoy JW 55B was an Arctic convoy sent from Great Britain by the Western Allies to aid the Soviet Union during World War II. It sailed in late December 1943, reaching the Soviet northern ports at the end of the month. All ships arrived safely.
During the voyage JW 55B was approached by a German force centred on the battleship Scharnhorst; no contact was made with the convoy, but Scharnhorst was sunk, in the Battle of the North Cape, by the battleship HMS Duke of York, a handful of Royal Navy light surface combatants, and Norwegian destroyer HNoMS Stord.