Surname Semenyachenko (Семеняченко 
, Semenyachenko 
) , in the entire world, is a rare cognomen. The surname Semenyachenko is habitual in Ukraine, where it is a rare surname, Kazakhstan, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Семеняченко | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Semenyachenko | Germany, Kazakhstan, Russia |