Kajaanis
Kajaanis is a Finnish and Swedish-language surname that derives from the toponymic name of the city of Kajaani, located in central Finland. The suffix –is, common in surnames of Finno‑Ugric origin, indicates a person "from" or associated with a place, making Kajaanis literally "one of Kajaani." The surname entered family registers in the late nineteenth and early twentieth centuries, largely during a period of increased bureaucratic documentation in the region.
Demographically, the name is most frequently found in Finland, with a concentration in the Kajaani region and
Notable persons with the surname Kajaanis include: Olli Kajaanis (born 1940), a Finnish historian specializing in
The surname Kajaanis exemplifies how place‑based names in Finland evolved into family identifiers. Through migration and