Last name Ljubko (Ljubko 
, Любко 
) , all over the world, is a rare cognomen. The last name Ljubko is characteristic of Belarus, where it is quite a rare surname, Estonia, where it is a rare surname, and Ukraine. Measured by absolute frequency, it is commonest in Eastern Europe, particularly Ukraine, Russia, and Belarus. Much less frequently, Ljubko is the forename as well as the last name.