Family name Iarkova (Яркова 
, Iarkova 
) , in all the world, is quite a rare cognomen. The last name Iarkova is habitual in Kazakhstan, where it is quite a rare surname, Russia, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Яркова | Kazakhstan, Russia, Belarus, Bulgaria, Ukraine |
| Iarkova | France, Russia, United States |