Cognomen Troianova (Троянова 
, Troianova 
, Троианова ) , globally, is quite a rare last name. The cognomen Troianova is characteristic of Eastern Europe, particularly Belarus, where it is quite a rare surname, Russia, and Ukraine, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Троянова | Bulgaria, Belarus, Kazakhstan, Russia, Ukraine |
| Troianova | Russia, Georgia, Greece |
| Троианова | Russia |
| polina troianova RU (b. 1996) |
|