Hjalmar von Bonsdorff

Hjalmar von Bonsdorff (26 November 1869 in Helsinki, Finland – 5 April 1945 in Stockholm, Sweden) was a Finnish admiral.

Von Bonsdorff's parents were Captain Victor Emil von Bonsdorff and Louise Adelaide Munck. Von Bonsdorff, trained as a naval officer in Saint Petersburg, served in the Imperial Russian Navy from 1891 to 1898. After joining the Finnish Maritime Administration, he was the head of its nautical chart department from 1899 to 1904. He participated in the Russo-Japanese War from 1904 to 1905 as a commander. 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. After the beginning of the First World War in 1914 he was called back to service and promoted to captain. Among other things, he was responsible for the coastal defense of the mouths and capes of the Danube in the Black Sea. He resigned the same year he received the rank of rear admiral. At the end of the Continuation War, he fled to Sweden in September 1944 and died there the following spring.

Söderkulla in Sipoo has streets named in honor of von Bonsdorff: Amiraalintie and Amiraalinkuja.