Cognomen Trostnikova (Trostnikova 
, Тростникова 
) , across the world, is a rare last name. The surname Trostnikova is habitual in Russia, where it is a rare surname, Kazakhstan, and Ukraine, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Trostnikova | Russia |
| Тростникова | Kazakhstan, Russia, Ukraine |