Cognomen Бернтсен (Berntsen 
, Бернтсен 
) , throughout the world, is quite a common last name. The cognomen Бернтсен is characteristic of Norway, where it is a common surname, Denmark, where it is quite a common surname, and Netherlands, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Norway, the United States, and Denmark.