Surname קס (Kees 
, Kass 
, Kes ) , worldwide, is a common family name. The cognomen קס is characteristic of Curacao, where it is quite a common surname, Estonia, and Luxembourg (explore the name in all countries). Not in comparison with a country's population, the name is most common in the United States, India, and Germany. Also, קס is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kes, Kees | Netherlands, India, Ethiopia, United States, Germany |
| Kass | India, Ethiopia, United States, Argentina, Germany |
| קס | Israel |