Cognomen Khadyko (Khadyko 
, Хадыко 
) , across the world, is a very rare surname. The last name Khadyko is characteristic of Belarus, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Russia. Very seldom, Khadyko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Khadyko | China, Russia |
| Хадыко | Kazakhstan, Russia, Belarus |