Convoy PQ 16 (21–30 May 1942) was an Arctic convoy of British, United States and Allied ships from Iceland to Murmansk and Arkhangelsk in the Soviet Union during the Second World War. The convoy was the largest yet and was provided with a considerable number of escorts and submarines. Convoy QP 12, a return convoy, sailed on the same day.
As Operation Barbarossa, the German invasion of the Soviet Union, had failed in 1941, the Germans began to build up forces in Norway to intercept Arctic convoys with ships, aircraft and U-boats, rather than rely on a quick victory.