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Around the world, Valko (Вълко , Valko , Валько ) is quite a rare boy's first name. The given name Valko is habitual in Bulgaria, where it is quite a common masculine name, the Democratic Republic of the Congo, where it is a rare male name, and Greece. Not in comparison with a country's population, this name is the most popular in Bulgaria, the Democratic Republic of the Congo, and Germany. More prevalently, Valko is the last name as well as the forename.
Valko is also a name for the fictitious and mythical characters: Valko , character in The Seven Brothers.