The most widely spoken language in Norway is Norwegian. It is a North Germanic language, closely related to Swedish and Danish, all linguistic descendants of Old Norse. Norwegian is used by some 95% of the population as a first language.poken by the Kven people, the Kven language is a Finnic language, closely related to Finnish, and spoken by some five to eight thousand people in northeastern Norway, particularly in Tromsoe (tromsø in the county Of) troms And. finnmark