Surname Oreshnikova (Орешникова 
, Oreshnikova 
) , in the world, is quite a rare cognomen. The last name Oreshnikova is characteristic of Russia, where it is quite a rare surname, Slovenia, where it is a rare surname, and Belarus. Not in comparison with a country's population, it is the most numerous in Russia, Kazakhstan, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Орешникова | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Oreshnikova | Slovenia, United States, Russia |