Surname Koubská (Koubská 
) , throughout the world, is a very rare last name. The cognomen Koubská is characteristic of Eastern Europe, particularly Czechia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Koubská | Czechia |
| libuše koubská CZ (b. 1948) |
|
|
| vlasta koubská CZ (b. 1959) |
|
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| patricie koubská CZ (b. 1973) |
|