Surname Зарко (Зарко 
) , all over the world, is a rare family name. The family name Зарко is characteristic of Bulgaria, where it is quite a rare surname, Ukraine, where it is a rare surname, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Eastern Europe, particularly Bulgaria, Ukraine, and Russia. Also, Зарко is the forename as well as the last name.