Ernst Ullring DSO (18 June 1894 – 10 October 1953) was a Norwegian naval officer and inventor who is known for his contributions during the Second World War.
He invented a series of naval instruments, including the direction finder called Ullrings peileskive.
During the Norwegian Campaign in 1940 he was in command of the destroyer HNoMS Sleipner, and he served as military governor of Svalbard 1942–1943.
In 1944 and 1945 he served as commodore at the Royal Naval Reserve, and was involved in the Battle of the Atlantic, including the Arctic convoys.
This biographical article related to the Norwegian military is a stub.