Cognomen كالين (Calin 
, Kalin , Kalen 
) , all over the world, is a common family name. The family name كالين is characteristic of Romania, where it is a common surname, Switzerland, where it is quite a common surname, and Aland Islands (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Romania, Turkey, and Switzerland. Likewise, كالين is the forename as well as the last name.