Surname 达勒 (Dahler 
, 达勒 
, Darrer 
) , in the entire world, is quite a rare cognomen. The family name 达勒 is characteristic of Switzerland, where it is quite a common surname, Norway, where it is quite a rare surname, and Ireland. In absolute terms, it is the most numerous in Switzerland, Germany, and the United States. Very seldom, 达勒 is the forename as well as the last name.