Cognomen Sousko (Sousko 
, Сусько 
) , around the world, is a rare surname. The last name Sousko is habitual in Belarus, where it is a rare surname, Greece, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sousko | Greece, Israel |
| Сусько | Kazakhstan, Russia, Ukraine, Belarus |