Cognomen Ярен (Jahren 
, Ярен 
) , throughout the world, is quite a rare family name. The last name Ярен is habitual in Northern Europe, particularly Norway, where it is quite a common surname, Sweden, where it is a rare surname, and Denmark. Not in comparison with a country's population, it is commonest in Norway, the United States, and Sweden. Very seldom, Ярен is the forename as well as the last name.