The story
Founded by Emil Aaltonen, J. J. Karvonen, Jalmar Castrén, Juhani Arajärvi, Leopold Lerche and Werner Ryselin in 1915.1
Private company
Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons3
Finnish manufacturer of railroad equipment and locomotives based in Tampere1
Oy Lokomo Ab was a Finnish manufacturer of railroad equipment and steam locomotives, situated in Tampere, Finland. The company was founded in 1915 by a group of Finnish businesspeople, including Jalmar Castrén and Emil Aaltonen. The Lokomo factories in Tampere produced the MIR submersibles for the Soviet Academy of Sciences.2 It was founded by J. J. Karvonen, Leopold Lerche, Werner Ryselin and Juhani Arajärvi and others.1 It employed 800 people in 2005.1 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
See how the biggest companies compare on our leaderboards

Oy Lokomo Ab was a Finnish manufacturer of railroad equipment and steam locomotives, situated in Tampere, Finland. The company was founded in 1915 by a group of Finnish businesspeople, including Jalmar Castrén and Emil Aaltonen. The Lokomo factories in Tampere produced the MIR submersibles for the Soviet Academy of Sciences. They later merged into the Metso Corporation. Jaakko Syrjä was a worker for the company.2
Founded by Emil Aaltonen, J. J. Karvonen, Jalmar Castrén, Juhani Arajärvi, Leopold Lerche and Werner Ryselin in 1915.1
Who has led Lokomo, and when. Pick a name to see everywhere that person has worked.
Listed on Wikidata.1
From Wikidata.1
The numbers on this page point here. Each one links to the record it came from.