Cognomen Ilayeva (Ilayeva, Илаева 
) , in all the world, is a rare family name. The surname Ilayeva is habitual in Kazakhstan, where it is a rare surname, Russia, where it is a very rare surname, and Kyrgyzstan.
| VARIANT | COUNTRY |
|---|---|
| Илаева | Kyrgyzstan, Kazakhstan, Russia, Ukraine |