Worldwide, كلوس (Klos 
, Clos 
, Closs 
) is a rare epicene forename. The given name كلوس is habitual in Azerbaijan, where it is quite a rare male name, Romania, where it is a rare male name, and Iraq, where it is a very rare girly name. In absolute terms, it is the most numerous in India, Azerbaijan, and Iraq. Likewise, كلوس is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Klos | Germany, United States, Poland, France, Brazil |
| Clos | Germany, Spain, United States, France, Brazil |
| Closs | Germany, Paraguay, United States, France, Brazil |