Family name Dyadyushko (Дядюшко 
, Dyadyushko 
) , all around the world, is a rare cognomen. The last name Dyadyushko is habitual in Eastern Europe, particularly Belarus, where it is a rare surname, Ukraine, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Дядюшко | Kazakhstan, Ukraine, Belarus, Russia |
| Dyadyushko | Germany, Russia |