Family name Posnova (Posnova 
) , globally, is a very rare surname. The cognomen Posnova is habitual in Russia, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Posnova | United States, Russia |
| tetyana posnova researcher |
|
|
| a.n. posnova botanist |
|