Cognomen Dedyaeva (Dedyaeva 
, Дедяева 
) , all over the world, is a rare last name. The family name Dedyaeva is habitual in Russia, where it is a rare surname, Kazakhstan, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Dedyaeva | Russia |
| Дедяева | Belarus, Kazakhstan, Russia, Ukraine |