Last name Zlotko (Zlotko 
, Злотко 
) , around the world, is a rare cognomen. The family name Zlotko is characteristic of Estonia, where it is a rare surname, Ukraine, and Poland, where it is a very rare surname. Measured by absolute frequency, the name is most common in Ukraine, Russia, and Argentina. Much less frequently, Zlotko is the forename as well as the last name.