Cognomen Rjaskova (Rjaskova 
, Ряскова 
) , in all the world, is a rare last name. The last name Rjaskova is characteristic of Russia, where it is a rare surname, Kazakhstan, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Rjaskova | Czechia |
| Ряскова | Kyrgyzstan, Kazakhstan, Russia, Ukraine |