Family name Soulko (Сулько 
, Soulko 
) , throughout the world, is a rare last name. The family name Soulko is characteristic of Ukraine, where it is a rare surname, Greece, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Ukraine, Russia, and Greece. Very seldom, Soulko is the forename as well as the last name.