Cognomen Řasa (Řasa 
) , in the world, is a very rare surname. The surname Řasa is characteristic of Eastern Europe, particularly Czechia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Řasa | Czechia |
| jan řasa CZ (b. 1959) |
|
|
| david řasa CZ (b. 1974) |
|