Surname Kasach (Kasach 
, Касач 
) , globally, is quite a rare cognomen. The last name Kasach is characteristic of Belarus, where it is quite a rare surname, Ethiopia, where it is a rare surname, and Russia. Very seldom, Kasach is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasach | Indonesia, Russia, Ethiopia, Belarus, Israel |
| Касач | Kazakhstan, Russia, Ukraine, Belarus |
| a.e. kasach botanist |
|