Family name Pyatnova (Pyatnova 
, Пятнова 
) , globally, is a rare cognomen. The family name Pyatnova is habitual in Russia, where it is a rare surname, Ukraine, where it is a very rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Pyatnova | Russia, United States |
| Пятнова | Kazakhstan, Russia, Ukraine |