Family name 克萊 (Clay 
, Klein , 克萊) , all around the world, is a widespread last name. The cognomen 克萊 is characteristic of Germany, where it is a common surname, Luxembourg, and Israel, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in Germany, the United States, and France. Very seldom, 克萊 is the forename as well as the last name.