Surname كلوس (Klos 
, Clos 
, Closs 
) , worldwide, is a common cognomen. The family name كلوس is characteristic of Aland Islands, where it is quite a common surname, Paraguay, and Poland. Not in comparison with a country's population, it most frequently occurs in Germany, Poland, and the United States. Also, كلوس is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Klos | Germany, United States, Poland, France, Brazil |
| Clos | Germany, Spain, United States, France, Brazil |
| Closs | Germany, Paraguay, United States, France, Brazil |