Surname Kajaeva (Каяева 
, Kajaeva 
) , in all the world, is a rare last name. The surname Kajaeva is habitual in Kyrgyzstan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Georgia. Measured by absolute frequency, it most frequently occurs in Russia, Kyrgyzstan, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Каяева | Kyrgyzstan, Kazakhstan, Russia |
| Kajaeva | Georgia |