Family name Puchnina (Puchnina 
, Пучнина 
) , in the world, is a rare surname. The surname Puchnina is habitual in Russia, where it is a rare surname, Kazakhstan, and Belarus, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Puchnina | Russia, Georgia, Ukraine |
| Пучнина | Kazakhstan, Russia, Belarus |