Cognomen 克恩 (Keen 
, Kern , 克恩 
) , around the world, is a widespread surname. The last name 克恩 is characteristic of Austria, where it is quite a common surname, Germany, and Slovenia (explore the name in all countries). Measured by absolute frequency, it is the most numerous in the United States, Germany, and Malaysia. Very seldom, 克恩 is the forename as well as the last name.