Last name لاسن (Lassen 
, Lasne 
, لاسن) , across the world, is a common surname. The surname لاسن is characteristic of Denmark, where it is quite a common surname, Norway, where it is quite a rare surname, and France. Not in comparison with a country's population, it is commonest in Denmark, France, and Germany. Very seldom, لاسن is the forename as well as the last name.