Surname Мачнов (Machnov 
, Мачнов 
) , in the entire world, is a very rare family name. The last name Мачнов is characteristic of Kazakhstan, where it is a very rare surname, Russia, and Ukraine. Measured by absolute frequency, the name is most common in Russia, Kazakhstan, and the United States. Very seldom, Мачнов is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Machnov | Russia, Peru, United States |
| Мачнов | Kazakhstan, Russia, Ukraine |