Kainuu (Swedish: Kajanaland; Russian: Кайнуу) is a region (maakunta / landskap) of Finland. It borders the regions of Northern Ostrobothnia, North Karelia and Northern Savonia. In the east it also borders Russia. Kainuu is known in the ancient Norse sagas as Kvenland.The administrative capital is Kajaani. Kainuu had 79 984 inhabitants in turn of years 2013 and 2014. The population is in decline.