Family name Керш (Kersh 
, Kerch 
, Kersch 
) , around the world, is quite a rare cognomen. The cognomen Керш is characteristic of Luxembourg, where it is quite a rare surname, Austria, where it is a rare surname, and Bahrain. Not in comparison with a country's population, it is commonest in the United States, Germany, and Egypt. Much less frequently, Керш is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kersh | Brazil, Australia, United Kingdom, United States, Egypt |
| Kerch | Brazil, Canada, United States, Morocco, Germany |
| Kersch | Brazil, United Kingdom, United States, Germany, Austria |
| Керш | Russia, Kyrgyzstan, Ukraine |