Cognomen Semenin (Semenin 
, Семенин 
) , globally, is a rare family name. The cognomen Semenin is habitual in Belarus, where it is quite a rare surname, Russia, where it is a rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Semenin | United States, Russia, Israel |
| Семенин | Kazakhstan, Ukraine, Belarus, Kyrgyzstan, Russia |