Cognomen Lachtchenko (Лащенко 
, Lachtchenko 
) , across the world, is quite a rare last name. The surname Lachtchenko is habitual in Eastern Europe, particularly Ukraine, where it is quite a rare surname, Belarus, and Russia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Лащенко | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Lachtchenko | United States, Ecuador |