Family name Касова (Kasowa 
, Касова 
) , across the world, is a rare cognomen. The last name Касова is characteristic of Eastern Europe, particularly Bulgaria, where it is quite a rare surname, Ukraine, where it is a very rare surname, and Russia, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Bulgaria, India, and Russia. Very seldom, Касова is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kasowa | South Africa, India |
| Касова | Ukraine, Russia, Bulgaria |
| яна касова Bulgarian athletics competitor, BG (b. 1981) |
|