Last name كلايس (Claes 
, Claës 
, كلايس) , around the world, is a common surname. The last name كلايس is characteristic of Belgium, where it is a common surname, Gabon, where it is quite a rare surname, and Luxembourg. Measured by absolute frequency, it most frequently occurs in Western Europe, particularly Belgium, Germany, and France. Also, كلايس is the forename as well as the last name.