Family name Sudeiko (Судейко 
, Sudeiko 
) , globally, is a rare last name. The cognomen Sudeiko is characteristic of Lithuania, where it is quite a rare surname, Ukraine, where it is a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Судейко | Belarus, Russia, Kazakhstan, Ukraine |
| Sudeiko | Germany, Russia, Lithuania |