Hjalmar von Bonsdorff (26 November 1869 in Helsinki, Finland – 5 April 1945 in Stockholm, Sweden) was a Finnish admiral.
[3] Von Bonsdorff, trained as a naval officer in Saint Petersburg, served in the Imperial Russian Navy from 1891 to 1898.
[3][4] After that, von Bonsdorff returned to Finland, where he was the head of the Oulu pilotage district and a lieutenant colonel in the Finnish Maritime Administration from 1908 to 1910.
During the Winter and Continuation Wars, he performed special duties from the commander-in-chief, such as awarding honors to the wounded in hospitals.
He was the chairman of the Nazi organization for Swedish speaking Finns, "People's Community Society" (Samfundet Folkgemenskap).