Children under the age of 18 with a Norwegian father and a foreign mother are on certain conditions eligible for Norwegian citizenship, please read more at ‘How do I give notification of Norwegian citizenship?

A birth certificate is not accepted as documentation.

Children born in Denmark, Finland, Iceland or Sweden:

Documentation that paternity is set by court or by other means is required.

Children born in other countries:

• It is required to document that paternity is set according to the national law of the relevant country
• If paternity is set by other means, documentation that this is approved by NAV is required (before July 1st 2007: Rikstrygdeverket).