Cognomen Piatrovich (Piatrovich 
, Пятрович , Пиатрович 
) , in the entire world, is a rare last name. The family name Piatrovich is characteristic of Latvia, where it is a rare surname, Belarus, and Lithuania. In absolute terms, it is commonest in Russia, Belarus, and Latvia.
| VARIANT | COUNTRY |
|---|---|
| Piatrovich | Estonia, Belarus, Latvia, India, Lithuania |
| Пятрович | Belarus |
| Пиатрович | Russia |
| siarhei piatrovich Ph.D. University of California, Irvine 2008 |
|