Family name Осен (Osen 
, Aasen 
, Осен 
) , all over the world, is quite a common last name. The cognomen Осен is characteristic of Norway, where it is a common surname, Brunei, where it is quite a rare surname, and Canada, where it is a rare surname. In absolute terms, it most frequently occurs in Norway, the United States, and Nigeria. Very seldom, Осен is the forename as well as the last name.