Family name קלרק (Clerck 
, Clerk 
, Klerk 
) , in the entire world, is a common surname. The cognomen קלרק is habitual in Namibia, where it is quite a common surname, Belgium, and Netherlands. Very seldom, קלרק is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Clerck | Belgium, Netherlands, Democratic Republic of the Congo, South Africa, United States |
| Clerk | Belgium, Netherlands, South Africa, United States, Ghana |
| Klerk | Belgium, Netherlands, Namibia, South Africa, United States |
| קלרק | Israel |