Article | Last updated: 2015-01-23 | Ministry of Children and Equality
The person with parental responsibility can choose whether the child is to have his/her mother's or father's surname. If the parents have shared parental responsibility, they decide on this together.
They must notify the National Registry (tax office) of the choice of name before the child is six months old. The child is given the mother's surname if they do not send notification by this deadline.
The Tax Administration website contains information on name changes and the choice of surname. Here, you can also find rules you must follow if you want the child to have two surnames.
Statistics Norway publishes annual statistics of the names used in Norway. These provide an overview of the most common girl and boy names, the most usual surnames, historical developments, etc.