Kajaani

Kajaani (; ), is a town in Finland and the regional capital of Kainuu. Kajaani is located southeast of Lake Oulu, which drains into the Gulf of Bothnia through the Oulu River. The population of Kajaani is approximately , while the sub-region has a population of approximately . It is the most populous municipality in Finland.

airport in Kajaani, Finland

thumb|Illustration in Finland framstäldt i teckningar edited by [[Zacharias Topelius and published 1845-1852.]]

castle in Kajaani, Finland

{| align=left border=1 cellpadding=4 cellspacing=0 style="float:right; margin-left: 0.5em; margin-bottom: 0.5em; background: #ffffff; border: 1px #aaaaaa solid; border-collapse: collapse; text-align:left; font-size: 95%; width: 260px;" |- ! style="background:#f9f9f9; text-align:center;" colspan=2 | Vuolijoen kunta |- | colspan=2 style="padding: 0px;" | {| align=center cellspacing=0 cellpadding=3 width=252 |- | align=center width=50% | 100px | align=center width=50% | 120px |- | align=center | Coat of Arms | align=center | Location |} |- bgcolor=#F9F9F9 | Founded | 1915 |- | Province | Oulu

railway station in Kajaani, Finland

church building in Kajaani, Finland

thumb|Old bar in Otanmäki village Otanmäki () is a village to the south-west of Kajaani, Finland. Otanmäki is located in Vuolijoki within the bounds of the City of Kajaani municipality.

Kajaanin Hokki were a Finnish ice hockey team based in Kajaani. The team was founded in 1968 and folded in 2025 due to bankruptcy. The last season of Hokki was the 2024-25 Mestis season where they positioned last. Hokki was refounded and currently plays in the III-Divisioona.

former football club from Kajaani, Finland

Finnish newspaper published in Kajaani

Paltaniemi is a village on the shores of Lake Oulujärvi, about north of the Kajaani's town center in Kainuu, Finland. It has a population of 291 inhabitants (in December 2020). The Kajaani Airport is located in the eastern side of the village.

LUMI (Large Unified Modern Infrastructure) is a petascale supercomputer located at the CSC data center in Kajaani, Finland. In January 2023, the computer became the fastest supercomputer in Europe.