Last name Хардер (Harder 
, Kharder 
, Хардер 
) , throughout the world, is a common cognomen. The cognomen Хардер is habitual in Denmark, where it is quite a common surname, Paraguay, and Germany (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in Germany, the United States, and Canada. Very seldom, Хардер is the forename as well as the last name.