Cognomen Clss (Clss 
) , in the entire world, is a very rare surname. The surname Clss is habitual in France, where it is a very rare surname, and the United States, where it is an extremely rare surname. Likewise, Clss is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Clss | India, United States, France |