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 |
|---|---|
| Kees, Kes | Germany, Ethiopia, United States, India, Netherlands |
| Kass | Germany, Ethiopia, United States, India, Argentina |
| קס | Israel |