Last name 库斯 (Koos 
, Kuss 
, Coes 
) , worldwide, is a common family name. The last name 库斯 is habitual in Hungary, where it is quite a common surname, Austria, where it is quite a rare surname, and Luxembourg. Measured by absolute frequency, this name is the most popular in Hungary, Germany, and the United States. Likewise, 库斯 is the forename as well as the last name.