Cognomen Bashko (Bashko 
, Башко 
) , worldwide, is a rare last name. The last name Bashko is habitual in Belarus, where it is quite a rare surname, Ukraine, where it is a rare surname, and Kazakhstan. Measured by absolute frequency, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Belarus. Very seldom, Bashko is the forename as well as the last name.