The standard path to Norwegian citizenship requires 7 years of continuous legal residence in Norway (out of the last 10).
Nordic citizens: 2 years.
Spouses/partners of Norwegians: 3 years (with 4 years total residence).
Children under 18: Included in parent's application.
Exceptional contributions to Norway: Discretionary waiver.
Applications are processed by the UDI (Directorate of Immigration). Processing takes 10–18 months.