Magnus (Måns) Rosén von Rosenstein "né" Aurivillius (9 March 1755 – 14 November 1801) was a Swedish Navy rear admiral. After having served in the Fleet of the Army, Rosenstein joined the Royal Navy in the American Revolutionary War against the French. He then joined the French Navy and took part in the Battle of the Saintes where he was taken prisoner by his former commander Admiral Sir Peter Parker and was imprisoned in England. He was immediately released, returned to Sweden and would later distinguish himself in the Battle of Svensksund. Rosenstein retired with the rank of rear admiral in the Swedish Navy in 1797 and died in his hometown of Uppsala in 1801.