Cognomen Клэй (Clay 
, Claye 
, Клэй) , around the world, is a common family name. The family name Клэй is habitual in Isle of Man, where it is quite a common surname, the United States, and the United Kingdom, where it is quite a rare surname. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Indonesia. Also, Клэй is the forename as well as the last name.