Last name Крэй (Cray 
, Krey , Krej 
) , across the world, is a common family name. The family name Крэй is habitual in Germany, where it is quite a rare surname, Ireland, and Israel. Not in comparison with a country's population, the name is most common in Germany, the United States, and Indonesia. Much less frequently, Крэй is the forename as well as the last name.