Convoy JW 56B 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 January 1944, reaching the Soviet northern ports at the beginning of February. All ships arrived safely. During the voyage JW 56B was attacked by a German U-boat force; no merchant ships were sunk, though one of the escorts was lost. One attacking U-boat was destroyed in the operation.