Surname Прочнов (Прочнов 
, Prochnov 
) , in the entire world, is a very rare family name. The family name Прочнов is habitual in Russia, where it is a very rare surname, Brazil, where it is an extremely rare surname, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Прочнов | Russia, Ukraine |
| Prochnov | Russia, Brazil |