Last name Sladkikh (Sladkikh 
, Сладких 
) , around the world, is a rare family name. The family name Sladkikh is habitual in Kazakhstan, where it is a rare surname, Russia, and Ukraine, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sladkikh | Italy, United States, Russia |
| Сладких | Kyrgyzstan, Kazakhstan, Ukraine, Russia |